Three times a number plus 12 minus 5 times the same number is 22
2 answers:
Three times (3 ·) a number (x) plus (+) 12 minus (-) 5 times (·) the same number (x) is (=) 22
3x + 12 - 5x = 22 Combine like terms (3x and -5x)
-2x + 12 = 22 Subtract 12 from both sides
-2x = 10 Divide both sides by -2
x = -5
1. a number is represented by "x"
<span>3x + 12 - 5x = 22 </span>
<span>12 - 2x = 22 </span>
<span>-2x = 10 </span>
<span>x = -5 </span>
<span>2. (45) + (45) + (45 + 6x) = 303 </span>
<span>job 1, 2, 3 equals total for the day </span>
<span>135 + 6x = 303 </span>
<span>6x = 168 </span>
<span>x = 28
</span>
<span>the plumbers hourly rate is $28/hr</span>
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