Ace school

with brainly

  • Get help from millions of students
  • Learn from experts with step-by-step explanations
  • Level-up by helping others

A community for students.

I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

Join Brainly to access

this expert answer

SEE EXPERT ANSWER

To see the expert answer you'll need to create a free account at Brainly

hello
this is a classic "substituion" problem
the idea is that you want to take the value of a variable from one equation, and "substitute" that into the other

Not the answer you are looking for?

Search for more explanations.

Ask your own question

Other answers:

since you have two unknowns, you need two equations - which you have
so let's take y=4x and substitute it into the second equation
so x+y = 5 becomes x + (4x) = 5 (I just replaced y in the second equation with what the first equation asserted y to be)
that is called subsitution
so x+4x =5, 5x=5, and now divide both sides by 5 for the answer
so x = 1
now that you have x, you can substitute that back into either equation to get the value of y
so x+y = 5, and I know that x=1. so 1+y=5, 1-1+y = 5-1, y=4 (subtract 1 from both sides)
i got up to x=1 then got confused on Y
ok great
well, think of x=1 as just another piece of information you now have, along with the original equations
so if x+y = 5 , and I already know x=1, then I can substitute the value of x in that first equation with what I know to be true
so 1 + y = 5
and then y=4
you can always check your work at the end of these problems too
plug in 4x for y x+4x=5 5x=5 5 divided by 5 = 1
so our guess is that x = 1, and y = 4
if you stick those back into the original equations, do they hold true?
yes
if they do, then you know you did it right
ok. got it. thank u
np!

Not the answer you are looking for?

Search for more explanations.

Ask your own question