Answer:
2=w
Step-by-step explanation:
28 = 14 + 7w
-14 -14
14 = 7w
14/7 = 2
7w/7 = w
Answer:
28cm
Step-by-step explanation:
7x4
or
7+7+7+7
Set up a proportion:
The numerator represents fluid ounces of milk, and the denominator represents milligrams of calcium.
Simplify the first fraction to make multiplication easier:
Cross multiply the fractions:
Divide both sides by 135 to get x by itself:
2.1 fluid ounces of milk provide 72.5 milligrams of calcium.