3 years ago

If (x+3)+3(x-1)=20, what is the value of x

1 answer:

8 0

1(x + 3) + 3(x - 1) = 20
1(x) + 1(3) + 3(x) - 3(1) = 20
   x + 3 + 3x - 3 = 20
   x + 3x + 3 - 3 = 20
      4x = 20
   4 4
      x = 5

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