Seudónimo Seudónimo
  • 18-01-2019
  • Mathematics
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Write an expression for the perimeter of this pentagon. If the perimeter is 157 units, find x.

Write an expression for the perimeter of this pentagon If the perimeter is 157 units find x class=

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jennychrin95
jennychrin95 jennychrin95
  • 18-01-2019

This the only option to find x since doing the other way like 3x + 2 = 3x + 2 gives it an infinite solution.

4x - 1 = 3x + 2

-3x       -3x

1x - 1 = 2

   +1    +1

1x = 3

---   ----

1       1

x = 3

Check:

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

12 - 1 = 9 + 2

11 = 11

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