Simplifying Equations

Solve:

 6 + 2x + 4 = 16

• 6

• 3

• 26

• 13

2c + 5 + c = 23

• c = 3

• c = 6

• c = 7

• c = 18

 $2\left(x+5\right)=8$ 

• -1

•  $\frac{3}{2}$ 

• 6

• 9

Solve.  -2x - 12 - x = 15

• 9

• -1

• 27

• -9

Solve for x:

-3x + 4 -2x + 1 = 50

Solve for k:

2(k -3) - 4 = 12

Which is the correct steps to solve this problem:

-5n - 8(1 +7n) = -8

• -5n - 8 + 56n = -8

  -8 + 51n = -8

  51n = 0

  n = 51

• -5n - 8 + 7n = -8

  2n - 8 = -8

  2n = 16

  n = 8

• -5n - 8 - 56n = -8

  -51n - 8 = -8

  -51n = 16

  n = -.31

• -5n - 8 - 56n = -8

  -61n - 8 = -8

  -61n = 0

  n = 0

Solve:
2(a + 4) = 2a - 8 + 4a

• 3
• -3
• -4
• 4