Question

help solving systems of equations with three variables 1. 2a+c=-10, b-c=15, a-2b+c=-5

Answer 1

use method of substitution

Answer 2

ok what do you do after
2a+b=5 and a-3b=10

Answer 3

so a= (5-b)/2
put it in a-3b=10 in place of a
you will get b

Answer 4

ok