Question

resolva:

a) 15/8 + 23/12 + 18/15 + 10/5 =

b) 1/98 - 2/98 - 3/98 - 4/98 =

c) 3x - 1x + 20 = 10 + 6x - 30

d) 30 - 20 + 2x = 10

Answer 1

Oi

a) 15/8 + 23/12 + 18/15 + 10/5==>0mmc de(8,12,15,5) = 120

225 + 230 + 144 + 240 / 120

839/120

b) 1/98 - 2/98 - 3/98 - 4/98

- 8/98

c) 3x - 1x + 20 = 10 + 6x - 30

3x  - 1x + 20 - 10 - 6x + 30

- 4x + 40

d) 30 - 20 + 2x = 10

30 - 20 + 2x - 10

2x

Espero ter ajudado

Answer 2

Resposta:

Explicação passo-a-passo:

A) 15/8 + 23/12 + 18/15 + 10/5==> 0mmc de(8,12,15,5) = 120

225 + 230 + 144 + 240 / 120

839/120

B) 1/98 - 2/98 - 3/98 - 4/98

- 8/98

C) 3x - 1x + 20 = 10 + 6x - 30

3x  - 1x + 20 - 10 - 6x + 30

- 4x + 40

D) 30 - 20 + 2x = 10

30 - 20 + 2x - 10

2x