Question

Resolva as equações.

a) 2 - 3x = -9 -4X

b) 350x -500 =100x + 750

c ) x + 5,41 = 3,87

d) 3(2x-1) = -2(x+3)

e)4(x + 10) - 2(x - 5) =0

f)3,5x + 8 = 2(x + 7)

Answer 1

Vamos lá, aos cálculos;

a) 2 - 3x = -9 -4X
2+9 = -4x+3x
-x = 11
x = -11

b) 350x -500 =100x + 750
350x-100x = 750+500
250x = 1250
x = 1250/250
x = 5

c ) x + 5,41 = 3,87
x = 3,87-5,41
x = -1,54

d) 3(2x-1) = -2(x+3)
6x-3 = -2x-6
6x+2x = -6+3
8x = -3
x = -3/8

e)4(x + 10) - 2(x - 5) =0
4x+40-2x+10=0
2x = -50
x = -50/2
x = -25

f)3,5x + 8 = 2(x + 7)
3,5x -2x = 14-8
1,5x = 6
x = 6/1,5
x = 4

Answer 2

Resposta:resumindo letra B

Explicação passo a passo:❤