Question

1- Resolva as equações do primeiro grau:

a)6x=2x+16

b)2x-5=x+2

c)2x+3=x+3

d)5x+7+3x+11

e)15x-2x=x+24

f)2x-4=16-2x

g)5x+10=10x-35

Answer 1

Explicação passo-a-passo:

a)

$6x=2x+16$

$6x - 2x = + 16$

$4x = + 16$

$x = \frac{16}{4}$

$\boxed{x = 4}$

b)

$2x-5=x+2$

$2x - x = + 2 + 5$

$1x = + 7$

$x = \frac{7}{1}$

$\boxed{x = 7}$

c)

$2x+3=x+3$

$2x - x = + 3 - 3$

$1x = 0$

$x = \frac{0}{1}$

$\boxed{x = 0}$

d)

Não está escrito certo.

e)

$15x-2x=x+24$

$15x - 2x - x = + 24$

$13x - x = + 24$

$12x = + 24$

$x = \frac{24}{12}$

$\boxed{x = 2}$

f)

$2x-4=16-2x$

$2x +2x = + 16 + 4$

$4x = + 20$

$x = \frac{20}{4}$

$\boxed{x = 5}$

g)

$5x+10=10x-35$

$5x - 10x = - 35 - 10$

$- 5x = - 45$

$- 5x = - 45 \: \: \: \: \: \: \: \times ( + 1)$

$5x = 45$

$x = \frac{45}{5}$

$\boxed{9}$

ATT: ARMANDO