Question

A) -6m+n=-5
6m-7n=5

B) 16r+2s=-10
-16r+s=13

Answer 1

a) {-6m+n=-5
{6m-7n=5
-6n=0.(-1)
6n=0
n=0/6
n=0
6m-7n=5
6m-7.0=5
6m-0=5
6m=5
m=5/6
S={(5/6 ; 0)}
b) {16r+2s=-10
{-16r+S=13
3s=3
s=3/3
s=1
16r+2s=-10
16r+2.1=-10
16r+2=-10
16r=-10-2
16r=-12
r=-12/16 (÷4)
r=-3/4
S={(-3/4 ; 1)}