Question

Resolva as equações do 1 grau;

Answer 1

Resposta:

Explicação passo-a-passo:

A) x - 5 + 8x = 4x + 10

9x -5 = 4x + 10

5x = 15

x = 15/5 = 3

B) 6x -11 = 5x - 3

x = 8

C) 8x -5 = -2x + 1

10x = 6

x = 6/10 = 3/5

D) 5 - 4(x + 1) = 4x - 3(4x - 1) - 4

5 - 4x - 4 = 4x - 12x + 3 - 4

4x = 2

x = 2/4 = 1/2

Answer 2

Resposta:

a) 3

b) 8

$c)\:\frac{3}{5}$

$d)-\frac{1}{2}$

Explicação passo-a-passo:

$a)x-5+8x=4x+10\\9x-4x=+10+5\\5x=15\\x=\frac{15}{5}\\\boxed{x=3}$

$b)6x-11=5x-3\\6x-5x=-3+11\\\boxed{x=8}$

$c)8x-5=-2x+1\\8x+2x=1+5\\10x=6\\x=\frac{6^{\div2}}{10} \\\boxed{x=\frac{3}{5} }$

$d)5-4(x+1)=4x-3(4x-1)-4\\5-4x-4=4x-12x+3-4\\5-4x=4x-12+3\\5-4x=-8x+3\\-4x+8x=3-5\\4x=-2\\x=-\frac{2^{\div2}}{4} \\\boxed{x=-\frac{1}{2} }$