Question

2(x-3y)=x-76 5(x-2y)=1-3(x-6y+43) substitution

Answer 1

2(x-3y)=x-76

2x-6y-x=-76

x-6y =-76

5(x-2y)=1-3(x-6y+43)

5x-10y=1-3x+18y-129

5x-10y+3x-18y=-129+1

8x-28y=-128

x-6y=-76

8x-28y=-128

substitution : x=6y-76

8(6y-76)-28y=-128

48y-608-28y=-128

20y=-128+608

y=24

calculation of x

x-6y=-76

x-144=-76

x=-76+144=68