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anonymous
 5 years ago
Can someone explain the substitution method for literal equations?
anonymous
 5 years ago
Can someone explain the substitution method for literal equations?

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amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1do you have n example we can work thru?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0x  y = 4 4y  x = 14

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1to substitute means to replace with an equal value right?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1xy = 4 ; lets solve for x by +y to each side xy+y = 4+y x+0 = 4+y x = 4+y ; this is an equal value for x; we use it in the other equation now

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0The 3 rules I have are 1. Solve one of the equations for x or y 2. Substitute this expression into the other equation and solve for one unknown. 3. Place this value back into one of the equations and determine the other unknown.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.14y  x = 14 4y (4+y) = 14 ; distribute the  thru the (...) 4y 4 y = 14 ; +4 to each side 4y 4+4 y = 14+4 4y y = 18 ; add your y's together 3y = 18 ; solve for y by /3 to each side y = 6

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1since y = 6 is a solid value; we can use it in our equation to find x recall that: x = 4+y ; and we now know that y = 6 x = 4+6 = 10

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1you can put it back into another equation if you want, but why bother with that since you already found an equation for x :)

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1youre welcome...again :)
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