Question

A)$3x +\frac{1}{7} =10\\\frac{10x}{3} -\frac{2x}{5}=\frac{6}{3} \\\frac{2}{6} + \frac{1}{7} =x$

Answer 1

Oie, Td Bom?!

3x + 1/7 = 10

3x = 10 - 1/7

3x = 70-1/7

3x = 69/7

x = 69/7 ÷ 3

x = 69/7 . 1/3

x = 23/7

10x/3 - 2x/5 = 6/3

15(10x/3 - 2x/5) = 15 . 6/3

15 . 10x/3 - 15 . 2x/5 = 15 . 2

5 . 10x - 3 . 2x = 30

50x - 6x = 30

44x = 30

x = 30/44

x = 30÷2/44÷2

x = 15/22

2/6 + 1/7 = x

2÷2/6÷2 + 1/7 = x

1/3 + 1/7 = x ⇐ MMC (21).

7+3/21 = x

10/21 = x

x = 10/21

Att. Makaveli1996