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77julia77 [94]
3 years ago
12

Simplify 31/2+1/8 I don't know how to do it

Mathematics
1 answer:
storchak [24]3 years ago
8 0
When adding fractions, you want the denominators to be the same number, so you have to multiply 31/2 by four for the numerator and denominator by 4 to have the denominators to both be 8. So the fraction on the left will be 124/8 + 1/8 =129/8. That fraction is in its simplest form.
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Answer & Step-by-step explanation:

The formula is given in the middle. You are supposed to insert the value of x into this formula to find the value of y (like in the first given example):

x=-2\\y=2(-2)+5\\y=-4+5\\y=1

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x=-1\\y=2(-1)+5\\y=-2+5\\y=3

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x=2\\y=2(2)+5\\y=4+5\\y=9

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