Question

ME AJUDEM URGENTE PFVR

a) x + 3x/5 = 40
b) x +2x/2=15
c) x/5 + 3 = 9
d) x/2+1=4
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Answer 1

A)

$x + \frac{3x}{5} = 40 \\ x + 3x = 200 \\ 4x = 200 \\ x = 50$

B)

$x + \frac{2x}{2} = 15 \\ 3x = 30 \\ x = 10$

C)

$\frac{x}{5} + 3 = 9 \\ \frac{x}{5} = 6 \\ x = 30$

D)

$\frac{x}{2} + 1 = 4 \\ \frac{x}{2} = 3 \\ x = 6$