You line up the decimal points and subtract, and carry the decimal point down to the same position in your answer: 1.3
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m-12=25. m=37
25
12 + x = 25remember you r trying to isolate the xstart by minusing 12 from both sidesx= 25-12so x=13
percent means over 100 48/100 or 12/25
Using algebra to solve this problem (12 + .25x = 30), the answer (x) is 72.