Question 176748
X+Y=64
X-Y=4 OR X=4+Y
NOW REPLACE X WITH(4+Y) IN THE FIRST EQUATION
(4+Y)+Y=64
4+2Y=64
2Y=64-4
2Y=60
Y=60/2
Y=30 ANS.
X-30=4
X=30=4
X=34 ANS.