Question

Реши уравнение: 2(Х+2)-4(Х-3)=5х+9

Answer 1

2x+4-4x+12=5x+9
-2x+16=5x+9
5x+2x=16-9
7x=7
x=7:7
x=1

Answer 2

2(Х+2)-4(Х-3)=5х+9
2x+4-4x+12=5x+9
2x-4x-5x=-4-12+9
-7x=-7
X=1