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-1- inches total precipitation, or 1— inches.

Practice Problem On an electric bill, about rr of the energy is from solar energy and about — is from wind power. How much of the total bill is from solar energy and wind power combined?

Example 3 In your body,- of your muscle contractions are involuntary (cardiac and smooth muscle tissue).Smooth muscle makes of your muscle contractions. How many of your muscle contractions are made by cardiac muscle?

Step 1 Find the LCD of the fractions.

Step 2 Rename each numerator and each denominator with the LCD. 7 X 3 = 21, 10 X 3 = 30 3 X 2 = 6, 15 X 2 = 30

Step 3 Subtract the numerators.

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