Best Answer

12d -9 = 15d +9

subtract 12d from each side and add 9 to each side

0= 3d

divide by 3 on each side

0 = d.

because if zero is in the numerator or dominator it makes the faction 0.

Q: What is 12d - 9 equals 15d plus 9?

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12d - 9 = 15d + 9 Subtract 15 d from both sides: -3d - 9 = 9 Add 9 to both sides: -3d = 18 Divide both sides by -3: d = -6

12 plus 9 equals 21.

144 9+7 = 16 and 9*16 = 144

The answer is 144. The compound operator for (a) and (b) in each pair is a * (a+b). For 9 and 7, this is 9 x (9+7) = 9 x 16 = 144.

The answer to the problem of 13 equals -4x plus 9 is x equals -1.

Related questions

12d - 9 = 15d + 9 Subtract 15 d from both sides: -3d - 9 = 9 Add 9 to both sides: -3d = 18 Divide both sides by -3: d = -6

9 plus 87 equals 96.

12 plus 9 equals 21.

No! It equals 15, but 9-6=3.

96

9+9+9+9 = 36

If I am correct, 9 plus 7 equals 112.

144 9+7 = 16 and 9*16 = 144

The answer is 144. The compound operator for (a) and (b) in each pair is a * (a+b). For 9 and 7, this is 9 x (9+7) = 9 x 16 = 144.

9+9+9+9+9+9+9=63

The answer to the problem of 13 equals -4x plus 9 is x equals -1.

3x plus 9 equals what?