Question

Resolva as questões. a) 5x – 7 = 3x + 15 b) 2x – 5 = 3 – 6x c) 3x – 4 = 2x + 8 d) 8x = 12 + 6x

Answer 1

Resposta:

a) 5x-7= 3x+15

5×-3×=15+7

2×=22=

x=22÷2

×=11

b) 2x-5=3-6×

2x+6×=3+5

8×=8

×=1

c) 3x-4=2×+8

3×-2×=8+4

×=12

D) 8×=12+6×

8x-6×=12

2×=12

×=12÷2

×=6