Simplify:

(5d - 7) - (d + 4)

(a)  

Simplify:

(-9y + 5) + (-7y + 3)

(a)  

Simplify:

7.8c + 6p - 3.4c - 10

(a)  

Distribute:

2.5(r - 5)

(a)  

Distribute:

-8(3f - 9)

(a)  

Distribute:

(t + p)4

(a)  

Factor using the GCF:

2x + 2y

(a)  

Factor using the GCF:

-6b - 15

(a)  

Factor using the GCF:

10c - 25

(a)  

Simplify:

5(b - 6) - 3b

(a)  

8y -  $\frac{1}{2}$ (4y - 16) 

(a)  

Simplify:

9a - 2(a - 3)

(a)