Question

Resolva as seguintes equações
4 (x+10) -2 (x-5) =0


X/5 +x/2=7

Answer 1

Vamos lá

Calculo:

4 ( X + 10 ) - 2 ( X - 5 ) = 0

4X + 40 - 2X - 10 = 0

4X - 2X = 0 + 40 + 10

2X = 50

X = 50 / 2

X= 25

.

X / 5 + X / 2 = 7

2X + 5X = 7 • 10

7X = 70

X = 70 / 7

X = 10