Question

3(x+1)-2(x-1)=(x+5)
ME AJUDEM!!!!​

Answer 1

Resposta:

3x+3-2x+2=x+5

3x-2x-1x=5-3

3x-3x=2

x=2

Answer 2

Resposta:

a) x = -3

b) x = 1

c) x = 1

d) x = -1

Explicação passo a passo:

a) 3 (X +2) = X

3X + 6 = X

3X - X = -6

2X = -6

X = \frac{-6}{2}2−6

X = -3

b) 2 (X - 1) = 4 (x - 2)

2X - 2 = 4x - 8  

2X - 4x = 4 - 8 + 2

-2X = -4 + 2  

-2X = -2 . (-1)

X = \frac{2}{2}22

X = 1

c) 2 (X + 3) = 5 - 3 (X - 2)

2X + 6 = 5 - 3X + 6

2X + 3X = 5 + 6 - 6

5X = 5

X = \frac{5}{5}55

X = 1

d) 5 (2X - 1) + 3 (2X + 3) + 12 = 0

10X - 5 + 6X + 9 + 12 = 0

10X + 6X = 0 + 5 - 9 - 12

16X = 5 - 21

16X = -16

X = \frac{-16}{16}16−16

X = -1