Question

Найдите корень уравнения: 7(x+6)=4(5x+4)

Answer 1

7x+42=20x+16
-13x=-26
x=2

Answer 2

7( х + 6 ) = 4( 5х + 4 )
7х + 42 = 20х + 16
7х - 20х = 16 - 42
- 13х = - 26
х = - 26 ÷ ( - 13 )
х = 2.