Question 95685
X+Y=25 OR X=25-Y
4X-12=2Y+16 NOW SUBSTITUTE (25-Y) FOR X IN THE SECOND EQUATION & SOLVE FOR Y:
4(25-Y)-12=2Y+16
100-4Y-12=2Y+16
100-16-12=2Y+4Y
6Y=72
Y=72/6
Y=12 FOR ONE NUMBER.
X+12=25
X=25-12
X=13 FOR THE SECOND NUMBER
PROOF
4*13-12=2*12+16
52-12=24+16
40=40