Question

Solve the simultaneous equations 7x+5y=32

3x+4y=23

Answer 1

3(7x+5y=32) and -7(3x+4y=23)
To make 21x+15=96 and -21x-28y=-161
Then add them to be -13y=-65
So y=-5
The substitute y
3x-20=23
3x=3
So x=1