Question

Subtract.

(–3f – 4g + 9) – (2 – 6f + 5g)
A. –9f + g + 7
B. 3f – 9g + 7
C. 3f – 9g + 11
D. –9f + g + 11

Answer 1

B. 3f – 9g + 7

Explanation:

(–3f – 4g + 9) – (2 – 6f + 5g)

Distribute the minus sign

(–3f – 4g + 9) – 2 + 6f - 5g

I like to line them up vertically

–3f – 4g + 9

+ 6f - 5g -2

------------------------

3f -9g +7