Пошаговое объяснение:
2) 13-(2x-5)=x-3
13 - 2x + 5 = x - 3
18 - 2x = x - 3
x + 2x = 18 + 3
3x = 21
x = 21:3
x = 7
3) 3x-(10-9x)=22x
3x - 10 + 9x = 22x
12x - 10 = 22x
22x - 12x = -10
10x = -10
x = -1
4) 26-(17-2x)=5x
26 - 17 + 2x = 5x
9 + 2x = 5x
5x - 2x = 9
3x = 9
x = 9:3
x = 3
Пошаговое объяснение:
2) 13-(2x-5)=x-3
13 - 2x + 5 = x - 3
18 - 2x = x - 3
x + 2x = 18 + 3
3x = 21
x = 21:3
x = 7
3) 3x-(10-9x)=22x
3x - 10 + 9x = 22x
12x - 10 = 22x
22x - 12x = -10
10x = -10
x = -1
4) 26-(17-2x)=5x
26 - 17 + 2x = 5x
9 + 2x = 5x
5x - 2x = 9
3x = 9
x = 9:3
x = 3