Question

a)-x-5+4x=-7x+6x+15

b)3x-2x=3x+2

c)2-4x=32-18x+12
resolva a equação de 1°grau ​

Answer 1

Resposta:

olá!!!

Explicação passo-a-passo:

a)-x-5+4x=-7x+6x+15

-x+4x+7x-6x=15+5

4x=20

x=20/4

x=5

b)3x-2x=3x+2

3x-2x-3x=2

-2x=2

x=2/-2

x=-1

c)2-4x=32-18x+12

-4x+18x=32+12-2

14x=42

x=42/14

x=3

bons estudos...

Answer 2

a)

$-x-5+4x=-7x+6x+15 \\ 7x-6x-x+4x=15+5$

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

$\boxed{x=5}$

b)

$3x-2x=3x+2\\ 3x-3x-2x=2 \\-2x=2\times(-1)$

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

$\boxed{x=-1}$

c)

$2-4x=32-18x+12 \\\boxed{18x-4x=32+12-2}$

$\boxed{14x=42} \\\boxed{x=\frac{42}{14}}$

$\boxed{x=3}$