Question

Please help I'm just horrible on this math and I don't get it at all.

Which is a simplified form of the expression 3(m + 1) + 2m?
A. m + 3
B. 5m + 1
C. 3m + 1
D. 5m + 3

Which is a simplified form of the expression -2b – 3(2b + 1)?
A. -b + 1
B. -5b + 1
C. -8b – 3
D. -8b – 1

Which is a simplified form of the expression -4(3r – 2) – 2(r + 1)?
A. 4r – 1
B. 10r – 7
C. -14r + 6
D. -12r – 1

Which is a simplified form of the expression 5c – 7(2c – 4)?
A. 9c + 28
B. -9c + 28
C. 9c - 28
D. -9c – 28

Which is a simplified form of the expression 3a + 7 – a – 7?
A. 2a
B. 4a
C. 2a + 14
D. 4a – 14

Answer 1

`Answers: \\ 5m + 3 \\ - 8b - 3 \\ - 14 r + 6 \\ - 9c + 28 \\ 2a`

Answer 2

1) 5m + 3

2) -8b - 3

3) -14r + 6

4) 9c + 28

5) 2a

Explanation:

1) 3(m+1) + 2m

3m + 3 + 2m

5m + 3

2) -2b-3(2b+1)

-2b-6b-3

-8b-3

3) -4(3r-2)-2(r+1)

-12r+8-2r-2

-14r+6

4) 5c-7(2c-4)

5c-14c+28

9c+28

5) 3a + 7 - a - 7

2a

make sure to combine like terms the way they are