Question

Tìm x:

3(2x+5)-2(5-4x)=7

Answer 1

3(2x+5) - 2(5 - 4x) = 7

=> 6x + 15 - 10 + 8x = 7

=> 14x + 5 = 7

14x = 7 - 5 = 2

x = 2 : 14

x = 1/7 

Answer 2

3(2x+5)-2(5-4x)=7

=> 6x+15-10+8x=7

=> 14x+5=7

=> 14x=7-5

=> 14x=2

=> x=2:14

=> x=2/14=1/7