Question

Si: A = 4B y A + B = 90. Calcula “A – B”

Answer 1

DATOS:

A = 4B

A + B = 90

RESOLUCIÓN:

A + B = 90

4B + B = 90

5B = 90

B = 18

A = 4B

A = 4*18

A = 72

A - B = 72- 18  =>  54

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