Answer:
1.5
Step-by-step explanation:

Step-by-step explanation:
X- (-12)=25
X+12=25
X=25-12
X=13
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If there are 12 grams of protein in all, and 4 servings, in order to get the amount of grams per serving you must divide 12 by 4.
12 divided by 4 = 4.
Therefore, there are 4 grams per serving.