What is 3x - y = - 4 2x - y = - 10

Using substitution

3x-y=-4

-y=-3x-4

y=3x-4

2

2x-y=10

2x - (3x-4) = 10

2x-3x+4=10

x=6

2x-y=-10

2 (6) - y=-10

12-y=-10

-y=-22

y=22

3x - y = - 4

3x - (-10) = - 4 Substitute

3x + 10 = - 4 Simplify

3x = - 14 Separate numbers and variables

x = - 14/3 Divide

2x - y = - 10

2x - (-10) = - 10 Substitute

2x + 10 = - 10 Simplify

2x = - 20 Separate numbers and variables

x = - 10 Divide