Question

a)l x + 6 l + l 2x + 10 l = 5x

b) l x+ 4 l + x - 8 l + l x-1 l = 12

Answer 1

\(\left|x+6\right|\) + \(\left|2x+10\right|\) = 5x

(x+6) + (2x +10) = 5x

x + 6 + 2x + 10 = 5x

(x + 2x) + (6 + 10) = 5x

( 3x ) + 16 = 5x

5x - 3x = 16

2x = 16

x = 16 : 2

x = 8

vậy x=8

Answer 2

+ = 5x

(x+6) + (2x +10) = 5x

x + 6 + 2x + 10 = 5x

(x + 2x) + (6 + 10) = 5x

( 3x ) + 16 = 5x

5x - 3x = 16

2x = 16

x = 16 : 2

x = 8

vậy x=8

Answer 3

+ = 5x

(x+6) + (2x +10) = 5x

x + 6 + 2x + 10 = 5x

(x + 2x) + (6 + 10) = 5x

( 3x ) + 16 = 5x

5x - 3x = 16

2x = 16

x = 16 : 2

x = 8

vậy x=8

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