1 ) 3a + b - 4b + 5a
= Solution,
= 3a + 5a +b - 4b
= 8a - 3b
2 ) x + 10x + 2y - 8
= Solution,
= x + 10x + 2y - 8
= 11x + 2y - 8
3 ) 10x² - 4 - 2x²+ x ²
= Solution,
= 10x² - 2x² + x ² - 4
= 9 x² - 4
4 ) 3b + a - b + 2a
= Solution,
= 3b - b + a + 2a
= 2b + 3a
5 ) 6y³ - y³- 2x² + x²
= Solution,
= 6y³ - y³ - 2x² + x²
= 5y³ - x²
6 ) -2y + 2 + 3y + 1
= Solution,
= - 2y + 3y +2 +1
= y + 3
7 ) 1 + 3x + 4x²- 5x + 8
= Solution,
= 1 + 8 + 3x - 5x + 4x²
= 9 - 2x + 4x²
8 ) 12 x + 3y + 6x + y
= Solution,
= 12x + 6x + 3y + y
= 18x + 4y
9 ) - 4a³ + 1 + a³ + 7a²
= Solution,
= -4a³ + a³ + 1 + 7a²
= 3a³ + 1 + 7a²
10 ) -2 + 35b - 8b - 2b
= Solution,
= -2 + 27b - 2b
= -2 + 25b
11) - 2b + 3ab + a + 9ab
= Solution,
=- 2b + 3ab + 9ab + a
= - 2b + 12ab + a
12 ) - x³ + 2x + 2x³ - x + x²
= Solution,
= - x³ + 2x³ + 2x - x + x²
= x³ + x + x²
~Eveloyane~