Question

Solve the system with the addition method: Write your answer in the form

Answer 1

since there is already 2 7x's we can multiply a positive 1 so we can eliminate the 7x's

+1 (-7x-4y=-7) = 7x+4y=7

7x+4y=7

-7x-2y=-4

2y=3

divide 2 on both sides to isolate y

y=2/3

now to find x you will have to plug in 2/3 to one of the original equations

-7x-2(2/3)=-4

-7x-1.33=-4

add 1.33 to both sides

-7x=2.67

divide -7 on both sides

x=0.38

hope this helped hon:)