32
r=-2
2x + 7 = 15 Subtract 7 from both sides: 2x = 8 Divide both sides by 2: x = 4
The number is 15 times 15 = 225
17
15
No negative number is equal to 15. Also, the only positive number equal to 15 is . . . . . 15.
15
2x+15
2x + 7 = 15 Subtract 7 from both sides: 2x = 8 Divide both sides by 2: x = 4
3n + 15 equals 3 times the number n, the answer to which is increased by 15. It can only be evaluated if the value of n is known. The expression can be factorised but that is of marginal help in evaluating it.
2x + 3 = 15- 3 from both sides2x = 12divide both sides by 2x = 6
16.10
15 of 0.2 equals 3.
The fraction 7/15 (represented in decimal form by 0.4666...) increased by 59 of itself is equal to the number 28. You can solve this by adding 1 to 59 (60) and then divide 28 by 60.
2*(15 + N)
The number is 15 times 15 = 225
81, 96-15=81
15 x 15 = 225