Question

6x+3y=12

6x-5y=60

Answer 1

i just solved this for you

Answer 2

substitute zero for the variable you want to eliminate. then divide across the equal sign to get the variable on its own

Answer 3

1. 6x+3y=12
2. 6x-5y=60

take away equation 2 from 1 you are left with:

8y= -48
divide both sides by 8

y= -6

now to work out x you should subsitute the value of y into one of the original equations

1. 6x+3y =12
1. 6x + (3*-6) = 12
1. 6x + -18 =12
1. 6x-18 =12
add 18 to both sides
1. 6x = 30
divide both sides by 6
x= 5

therefore x= 5 and y = -6