Question

Resolva as equações:

a) 4x – 18 + 3x = 10

b) 3(x – 5) + 2x = 4(2 - x)
c)x+8/5+x+2/2=4
d)2 (2x+2)/2+2(x+6)/=14​

Answer 1

Resposta: a) 4  b) 23/9 c) 7/2  d) 0

Explicação passo-a-passo:

a) 4x – 18 + 3x = 10

4x + 3x = 10 + 18

7x = 28

x = 28/7

x = 4

b) 3(x – 5) + 2x = 4(2 - x)

3x - 15 + 2x = 8 - 4x

3x + 2x + 4x = 8 + 15

9x = 23

x = 23/9

c) x + 8/5 + x + 2/2 = 4

2x + 8/5 + 1 = 4

2x = 4 - 1 - 8/5

2x = 20/5 - 5/5 - 8/5

2x = 20 - 5 - 8

2x = 7

x = 7/2

d) 2(2x + 2) /2 + 2(x+6) = 14​

(4x + 4) /2 + 2x + 12 = 14

2x + 2 + 2x + 12 = 14

4x = 14 - 12 - 2

4x = 0

x = 0