Question 111491
Evaulate the expression when x= -3/8 and y= 7/12.

28. y - x

Any help with this equation would be <b>GREATLY</b> appreciated.<br>
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The problem is merely a substitution problem. You see, it says x = {{{-3/8}}}, right? and on #28, it says y - x. So you'll change that x into {{{-3/8}}} instead, and same with y which equals {{{7/12}}}.<br>
After substituting, the problem should be: {{{7/12}}} - {{{-3/8}}}. i'm hoping you know full well that when two negative signs are together, then it changes to positive, which is: {{{7/12}}} + {{{3/8}}}. And after that, just add, which the answer is: {{{23/24}}}.
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Good luck; math is more than just memorizing!