The sum of three numbers is 45. the second of the three numbers is three more than twice the first number. the third unter
is two more than the first number, x. which eguation can be used to solve for the first number,
x + 5x + x + 2 = 45
x+x+3+x+ 2 = 45
x + 3x + 2 + x + 2 = 45
x + 2x + 3 + x + 2 = 45
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