6(n+12) + 3(n+6) = 58.5
6n + 72 + 3n + 18 = 58.5
9n + 90 = 58.5
9n = 58.5 - 90
9n = -31.5
n = -3.5
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it means 8+3x 8 increased (plus) three times a number (3x) x is an unknown number so it is often called a number
A number is x squared plus forty four is equal to the number x to the fourth power times three?
So 5 must be the other two times the number which means the number is 2.5.
30 divided by 6 = 5, plus 4 = 9.
+ times a + = a plus- times a + = a minus- times a - = a plus+ times a - = a minus