Question

If 3x + 8x + 4x = 6x + 63, then what is 5x + 23?

Answer 1

3x + 8x + 4x = 6x + 63
15x = 6x + 63
9x = 63
  x = 7

so
5x+ 23 =5(7) + 23 = 35+23 = 58

Answer 2

3x+8x+4x=6x+63
First, since almost everything is together, combine like terms

15x=6x+63

Now, subtract 6x from both sides

9x=63

Now divide both side by 9

x=7

Now that we have found what x equals, we need to plug in the variable into 5x+23

5(7)+23

Now just simplify

35+23= 58
Therefore, 5x+23 when x=7 is 58