Question

как решить уравнение.
2(x+2)-4(x-3)=5x+9

Answer 1

2(x+2)-4(x-3)=5x+9
2x+4-4x+12=5x+9
4+12-9=-2x+4x+5x
7=7x
x=7/7=1

Answer 2

2( x + 2 ) - 4( x - 3 ) = 5x + 9
2x + 4 - 4x + 12 = 5x + 9
- 2x + 16 = 5x + 9
5x + 2x = 16 - 9
7x = 7
x = 1