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MightySmurf
 3 years ago
Solve this system of equations using the addition method?
xy=6
3y=x+22 Solve this system of equations using the addition method?
xy=6
3y=x+22 @Mathematics
MightySmurf
 3 years ago
Solve this system of equations using the addition method? xy=6 3y=x+22 Solve this system of equations using the addition method? xy=6 3y=x+22 @Mathematics

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amistre64
 3 years ago
Best ResponseYou've already chosen the best response.13x +3y = 18 3y = x+22  3x = x+4 4x = 4

amistre64
 3 years ago
Best ResponseYou've already chosen the best response.1by using the "addition" method ... you add the 2 equations together after you modify one of them by a scalar

amistre64
 3 years ago
Best ResponseYou've already chosen the best response.1a scalar just means some number that you multiply the whole equation by to scale it up or down to something that you can use

MightySmurf
 3 years ago
Best ResponseYou've already chosen the best response.0o so i just substitute it

amistre64
 3 years ago
Best ResponseYou've already chosen the best response.1well, substitution will work as well; but this is a new method for you to learn so that you have many ways you can attack a problem to get to a solution

amistre64
 3 years ago
Best ResponseYou've already chosen the best response.1this "addition" method is also commonly refered to as "elimination" since the goal is to eliminate one of the variables

MightySmurf
 3 years ago
Best ResponseYou've already chosen the best response.0o ok thank you u make it sound easier to solve

MightySmurf
 3 years ago
Best ResponseYou've already chosen the best response.0so if i were to have 8x+3y=5 and 8x2y=6 i would add the _8x and the 8x to get zero then 32y to get y and 5+6 to get 1 right

amistre64
 3 years ago
Best ResponseYou've already chosen the best response.1practice helps :) the steps are pretty much like this: x  y = 6 ; (1) 3y = x + 22 ; (2) given 2 equations lets multiply one of them by a "n"umber to scale it. the easiest one would be the first one to me n(x  y = 6) ; (1) 3y = x + 22 ; (2) nx  ny = 6n ; (1) 3y = x + 22 ; (2) now what does "n" have to be to get rid of the 3y? id say n = 3 will work 3x  3y = 6(3) ; (1) 3y = x + 22 ; (2) 3x +3y = 18 ; (1) 3y = x + 22 ; (2) now we can add the equations together: 3x +3y = 18 ; (1) 3y = x + 22 ; (2)  3x = x + 4 ; (3) and solve the new equation (3) for the remaining variable

amistre64
 3 years ago
Best ResponseYou've already chosen the best response.1if they give you: 8x+3y =5 8x2y = 6 then yes the x parts are already set up for elimintion, just add the 2 equations together

MightySmurf
 3 years ago
Best ResponseYou've already chosen the best response.0ok thank u sooo much i would give u thousands of medals if i could

amistre64
 3 years ago
Best ResponseYou've already chosen the best response.1youre welcome, and good luck ;)
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