remove parenthesis : 2/3 - 5/6 + 9/4 - 3/5
add fractions based on lcm : 40/60 - 50/60 + 135/60 - 36/60
equal denominator so combine fractions : 40 - 50 + 135 - 36 / 60
add/subtract : 40 - 50 + 135 - 36 = 89
answer ; 89/60
C
YOUR ANSWER IS C BECAUSE ITS EQULVILENT
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Their are caculators online search the type of math it is then put caculator for example exponents caculator
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