Question

3(x+7)=2y
2(y+5)=7x
ayuda por favor

Answer 1

desarrollando
3x + 21 = 2y
2y + 10 = 7x
ahora
3x -2y = -21
-7x+2y= -10
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-4x =-31
x = 31/4
y = 7x -10/2
y = 7 (31/4) -10/2
y = 177/8