Question

please help:
Use the substitution method to solve the linear system. x-y=10
5x-y=-6 and(different problem)
4x+y=2
x-y=-17

Answer 1

50+5y-y=-6
4y=-56
y=-14

x-(-14)=10
x+14=10
x=-4

x=-4 and y=-14 for the first one

Answer 2

thank you soo much

Answer 3

x-(2-4x)=-17
x-2+4x=-17
5x-2=-17
5x=-15
x=-3

y=14

x=3 and y=14 for the second one

Answer 4

no problem :)