Creating an Equation

The sum of d and 12 gives an answer of 15

• d÷ 12 = 15

• d + 12 = 15

• 12d = 15

• 15 + 12 = d

The product of a and 6 is 30

• a - 6 = 30

• 6 + 30 = a

• 6 + a = 30

• 6a = 30

The difference between b and 10 is 20

• b - 10 = 20

• b + 10 = 20

• 10b = 20

• b ÷ 10 = 20

The product of b and c is 12

• 12b = c

• b + c = 12

• bc = 12

• b ÷ c = 12

When b is divided by 8 the quotient is 6

• b/8 = 6

• b x 8 = 6

• 6 + 8 = b

• 6b = 40

When c is added to d, the result is 34

• cd = 34

• 34 + c = d

• c - d = 34

• c + d = 34

The difference between m and n is 9

• mn = 9

• m/n = 9

• m - n = 9

• m + n = 9

My age is n, my son's age is j. When we add them together we get a result of 75

• n + j = 75

• n x j = 75

• 75 + n = j

• j/n = 75

The time it takes me to get to school is m minutes. It takes me 15 minutes longer to get home. My total time driving each day is 55 minutes.

• 2 x 15 + m = 55

• m + 15 = 55

• m + m + 15 = 55

• 55 - m = 15

Think of any number between 1 and 10

Double the number.

Add 9

Subtract 3

Divide the answer by 2

Subtract the number with the first number started with.

• 3

• 4

• 5

• 6