Question

Use substitution or elimination to solve. Please explain.
x+3y=2
-2x+y+z=5
y+z=-3

Answer 1

i refer to equations as 1, 2 and 3
3 - 2 eliminates x and y
giving
-2x = 8
x = -4
sub this into 1
-4 + 3y = 2
3y = 6
y = 2
plug this into 3
2 + z = -3
z = -5

Answer 2

ok with that yrivers?

Answer 3

u follow it ok?

Answer 4

Yes thank you so much.