Question

a)x+5=7 b)7x+x=16 c)3(2x+5)=4x-3 d)6x=36 e)x-5=1 f)x-2=+3-3x

Answer 1

Explicação passo-a-passo:

a)

$x + 5 = 7$

$x = 7 - 5$

$x = 2$

b)

$7x + x = 16$

$8x = 16$

$x = \frac{16}{8}$

$x = 2$

c)

$3(2x + 5) = 4x - 3$

$6x + 15 = 4x - 3$

$6x - 4x = - 15 - 3$

$2x = - 18$

$x = \frac{ - 18}{2}$

$x = - 9$

d)

$6x = 36$

$x = \frac{36}{6}$

$x = 6$

e)

$x - 5 = 1$

$x = 1 + 5$

$x = 6$

f)

$x - 2 = 3 - 3x$

$3x + x = 3 + 2$

$4x = 5$

$x = \frac{5}{4}$