Question

Solve by elimination

7x + 3y = 25

-2x - y = -8

Answer 1

solving by elimination means we need the coefficients on one of the variables to be the same or opposite.

so lets multiply the bottom equation -2x - y = -8 by 3
we would get -6x - 3y = -24

now we can literally add the equations together to get rid of the y variable

Answer 2

7x+3y = 25
+ -6x -y =-24


x = 1

Answer 3

now that we know x = 1, we can plug that back into one of the equations and solve for y

so 7(1) + 3y = 25

now just solve for y

Answer 4

kk

Answer 5

thx

Answer 6

you're welcome