Question

Simplify math equations

1) -13.5a + 34.12b + 65.5a - 32.5b - 35.8a

A) 32.5a + 20.47b
B) 16.2a + 1.62b
C) -18.7a - 26b
D)1.62a + 16.2b

2) 4.2 (3.9r - 5.9s) + 7.9s - 9.53r

A) 16.88r + 6.85s
B) 10.82r + 31.15s
C) 10.82r - 31.15s
D) 6.85r - 16.88s

3) 7p + 20 - 13q - 4q - 18 + 6p

A) 13p + 17q - 2
B) 13p - 17q + 2
C) 3q + 38
D) 3q - 6

4) -15 + 23r + 9r^2 - 16r + 10

A) 9r^ - 10 - 7r
B) 16r^2 - 5
C) 9r^2 - 7r^2 - 5
D) 9r^2 + 7r - 5

5) 5x (3 - 12x) - 3 (4 - 20x^2)

A) 15x - 12
B)15x^2 - 60x
C)60x^2 - 15x
D) 15x^2 - 12x

6) 2/3 × - 4/6 + × + y

A) 5/3x + 5/9y
B) 5/9x + 5/3y
C) 3/5x + 9/5y
D)9/5x + 3/5y

Answer 1

1) A
2)...to be continued

Answer 2

I think, 1. B, 2. C, 3. A, 4. B, 5. C, and 6. is B, not entirely sure. might want to check!:P