Question

X+Y=64 X-Y=10 equacao de primeiro grau

Answer 1

x+y = 64
x - y = 10

2x + 74
x = 37

37 -y = 10
-y = -27
y= 27

Answer 2

X+Y=64
X-Y=10
  2x = 74 ==> x = 37

y = 64 - x ==> y = 64-37 ==> y = 27