Question

Calcule o Valor de X:

A)X+2=3
B)X+X=20-10
C) 2X-10=5
D) 5X=X+48​

Answer 1

a)

$x + 2 = 3 \\ x = 3 - 2 \\ x = 1$

b)

$x + x = 20 - 10 \\ 2x = 10 \\ x = \frac{10}{2} \\ x = 5$

c)

$2x - 10 = 5 \\ 2x = 5 + 10 \\ 2x = 15 \\ x = \frac{15}{2}$

d)

$5x = x + 48 \\ 5x - x = 48 \\ 4x = 48 \\ x = \frac{48}{4} \\ x = 12$