Question

"x + y", si: a) 10 (x + 5) = 80 b) 8 (y - 3) = 56 2. Calcula??
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Answer 1

Explicación paso a paso:

10(x+5) = 80

10x + 50 = 80

10x = 30

X = 3

8(y-3) = 56

8y - 24 = 56

8y = 80

Y = 10

X + y = 13