Question

Add the expression (algebra)
1. (2x + 5) + (x + 4)
2. (3y - 5) + (2y + 4)
3. (4a + 12) + (-6a - 13)

Subtract the expression
4. (3x + 3) - (4x + 6)
5. (8y - 7) - (y - 4)
6. (3b + ) - (2b + 7)

Factor each expression
7. 16y - 8
9. -12c - 8

Answer 1

Step-by-step explanation:

1.

$(2x+5)+(x+4)\\2x+5+x+4\\2x+x+5+4\\3x+9$

2.

$(3y-5)+(2y+4)\\3y-5+2y+4\\3y+2y-5+4\\5y-1$

3.

$(4a+12)+(-6a-13)\\4a+12-6a-13\\4a-6a+12-13\\-2a-1$

4.

$(3x+3)-(4x+6)\\3x+3-4x-6\\3x-4x+3-6\\-x-3$

5.

$(8y-7)-(y-4)\\8y-7-y+4\\8y-y-7+4\\7y-3$

6. Incomplete (3b + ?)

7.

$16y-8\\(8)(2y-1)$

8.

$-12c-8\\(4)(-3c-2)$

Answer 2

1. 3x + 9
2.5y - 1
3.-2a - 1
4. x - 3
5. 7y - 3
6. b - 7
7. 8(2y - 1)
8. -4(3c + 2)