Question

Tìm x:

1) (x+1).5=(x+2).1

2) (2-x).7=(x-5).3

Answer 1

a) (x + 1).5 = (x + 2).1

5x + 5 = x + 2

4x + 3 = 0

4x = -3

x = -0,75

b) (2 - x).7 = (x - 5).3

14 - 7x = 3x - 15

29 = 10x

x = 2,9

Answer 2

1) (x+1).5=(x+2).1

5x+5=x+2

5x-x=2-5

4x=-3

x=\(\frac{-3}{4}\)

2) (2-x).7=(x-5).3

14-7x=3x-15

3x+7x=14+15

10x=29

x=\(\frac{29}{10}\)