1) 3(5 + 2x) + 4x = 1000
15 + 6x + 4x = 1000
6x + 4x = 1000 - 15
10x = 985
x = 98,5
2) 3x - 8 = 5x
3x - 5x = 8
- 2x = 8
x = - 4
3) 5(x + 2) = 9(x - 2 + 16)
5x + 10 = 9x - 18 + 144
5x - 9x = - 18 + 144 - 10
- 4x = 116
x = - 29
1) 3(5 + 2x) + 4x = 1000
15 + 6x + 4x = 1000
6x + 4x = 1000 - 15
10x = 985
x = 98,5
2) 3x - 8 = 5x
3x - 5x = 8
- 2x = 8
x = - 4
3) 5(x + 2) = 9(x - 2 + 16)
5x + 10 = 9x - 18 + 144
5x - 9x = - 18 + 144 - 10
- 4x = 116
x = - 29