1.

a) 3x – 15 + 2x = 18 + 4x + 25

b) 17x – 33 + 12x – 16 = 4x + 56 + 10x

c) –22x + 36 + 18x – 6 = 16x + 55 + 12x – 89

d) 4x – 22 + 3x – 45 = 8 – 2x + 26 + 5x – 1

2.

a) 22x + 48 – 55x – 55x = 36 – 45 + 12x – 43

b) 17x – 17 – 4x = 3x + 3

c) 4x – 5 + 0,5x = 15 – 0,5x

d) 14x – 39 – 13x = 19 – 4x + 142

3.

a) 20x – 36 + 2x = 3x – 17

b) 5x + 14 + 31 = 4x + 73

c) 156 – 4x + 36 = 22 – 24x + 250

d) 19x – 17 – 3x + 72 = 12 + 9x – 25 + 4x + 83

4.

a) 6x + 1 – 2x + 5x – 3 + 3x = 2x + 17 + 4x + 35

b) 15x + 4 + 9x + 33 + 4x = 6x – 86 + x + 9x – 9

c) 30x – 4 + 2x + 17 + 25 – 13x = 15 + 12x + 21 + 18x + 22 – 11x

d) 9x + 33 + 4x + 8x + 2 – 5x = 9x – 7 + 12 – 3x + 10

5.

–47y + 569 – 45y – 55y + 231 = –147y + 987 – 36y + 444 + 89

665m – 478 – 365m + 884 – 320m = 6987 – 358 – 12m – 3365 + 6

–254a + 369 – 258 + 458a – 369 = –540a + 3320 + 142

–258x + 5873 – 3369 + 368x – 897 – 321x + 33 = 1007

–258x – 8547 + 321x – 5874 + 3620x – 5584 = –1478x + 13479 – 3210x

90 – 36x + 30x + 90 = 6x – 24 + 108 – 9x