2*(x+2.5)-4*(1.5-1)=-3
2x + 5 – 6 + 4 = – 3
2x = – 3 – 4 + 6 – 5
2x = -6
x = -3
3*(1.6x-0.2)-2*(0.6x+2.5)=x+2.2
4.8x – 0.6 – 1.2x – 5 = 1x + 2.2
4,8x – 1,2x – x = 2,2 + 5 + 0,6
2.6x = 7.8
x = 3
1.8*(5-2x)-2*(0.8x+2.5)=8-1.2x
9 – 3.6x – 1.6x – 5 = 8 – 1.2x
– 3,6x – 1,6x + 1,2x = 8 + 5 – 9
-4x = 4
x = -1
2*(x+2.5)-4*(1.5-1)=-3
2x + 5 – 6 + 4 = – 3
2x = – 3 – 4 + 6 – 5
2x = -6
x = -3
3*(1.6x-0.2)-2*(0.6x+2.5)=x+2.2
4.8x – 0.6 – 1.2x – 5 = 1x + 2.2
4,8x – 1,2x – x = 2,2 + 5 + 0,6
2.6x = 7.8
x = 3
1.8*(5-2x)-2*(0.8x+2.5)=8-1.2x
9 – 3.6x – 1.6x – 5 = 8 – 1.2x
– 3,6x – 1,6x + 1,2x = 8 + 5 – 9
-4x = 4
x = -1