Simplify: –4(x – 6) + 3(a – 7)
(Points : 1)
–4x + 3a – 45
–4x + 3a + 45
–4x + 3a – 3
–4x + 3a + 3

Question

Simplify: –4(x – 6) + 3(a – 7) 
(Points : 1)
       –4x + 3a – 45
       –4x + 3a + 45
       –4x + 3a – 3
       –4x + 3a + 3

anonymous · Answer

–4(x – 6) + 3(a – 7)  
We need to distribute to simplify. 
-4(x - 6) Starting with the first part. 
-4 * x = -4x
-4 * -6 = 24 ( 2 negatives = a positive)
So, the first part is -4x + 24. 
3(a - 7) Second part now. 
3 * a = 3a
3 * -7 = -21 
Second part is 3a - 21.
Putting them together. 
-4x + 24 + 3a - 21
Combine like terms. 
-4x + 3a + 3 <--- Answer.