Question

resolva as equações

A)4x=-8+36
B)5(1-x)-2x+1=-3(2+x)
C)2+3(x-(3x+1) )=5(x-(2x-1) )​

Answer 1

Resposta:

A-) 4x=-8+36

4x=28

x=28/4

x=7

B-)5(1-x)-2x+1=-3(2+x)

5-5x-2x+1=-6-3x

-7x+3x=-6-5-1

-4x=-12 ×(-1)

4x=12

x=3

C-)2+3(x-3x-1)=5(x-2x+1)

2+3x-9x-3=5x-10x+5

-6x-5x+10x=5-2+3

-x=6 ×(-1)

x=-6

Answer 2

Resposta:

a) x = 7

b) x = 3

c) x = -6

Explicação passo-a-passo:

$a)4x = - 8 + 36 \\ 4x = 28 \\ x = 28 \div 4 \\ x = 7 \\ \\ b)5(1 - x) - 2x + 1 = - 3(2 + x) \\ 5 - 5x - 2x + 1 = - 6 - 3x \\ - 5x - 2x + 3x = - 6 - 5 - 1 \\ - 4x = - 12 \\ x = - 12/ - 4 \\ x = 3$

$c)2 + 3(x - (3x + 1)) = 5(x - (2x - 1)) \\ 2 + 3(x - 3x - 1) = 5(x - 2x + 1) \\ 2 + 3( - 2x - 1) = 5( - x + 1) \\ 2 - 6x - 3 = - 5x + 5 \\ - 6x + 5x = 5 - 2 + 3 \\ - x = 6 \: \: \: \: \: \: \: \: \times ( - 1) \\ x = - 6$

• Espero ter ajudado.