Solve equations with fractions

Solve for x.

• 3/7

• 7

• 21

• 1/21

Answer explanation

To undo multiplying by a fraction, multiply by the RECIPROCAL.

When multiplying whole numbers by fractions, change the whole number to a fraction (3 is 3/1).

Then, multiply straight across.

Solve for x.

• 9/2

• 8/9

• 18

• 36

Answer explanation

To undo multiplying by a fraction, multiply by the RECIPROCAL.

When multiplying whole numbers by fractions, change the whole number to a fraction (4 is 4/1).

Then, multiply straight across. Simplify.

• x = 6

• x = -6

• x = 9

• x = -9

Answer explanation

To undo multiplying by a fraction, multiply by the RECIPROCAL.

When multiplying whole numbers by fractions, change the whole number to a fraction (-18 is -18/1).

Then, multiply straight across. Simplify.

• x = -24

• x = 50

• x = 24

• x = -50

Answer explanation

Undo addition/subtraction first.

To undo multiplying by a fraction, multiply by the RECIPROCAL.

When multiplying whole numbers by fractions, change the whole number to a fraction (15 is 15/1).

Then, multiply straight across. Simplify.

• h = 1 3/8

• h = -1 3/8

• h = -40

• h = 40

Answer explanation

Undo addition/subtraction first.

To undo multiplying by a fraction, multiply by the RECIPROCAL.

When multiplying whole numbers by fractions, change the whole number to a fraction (-15 is -15/1).

Then, multiply straight across. Simplify.

• add 13 to both sides

• divide by 4

• subtract 13 from both sides

• multiply by 4