Evaluate -12/5 + 31/10 + 11/-15 + 7/18
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Step-by-step explanation: [-12/5+(-11/15)+31/10] +7/18
lcm of 15, 5, 10 =(-12 X 6/30) + (-11 X 2/30) + (31 X 3/30) + 7/18
= (-72 - 22 + 91/30) +7/18
= -1/10 + 7/18
lcm of 10 and 18 = -9 + 35/90
= 26/90
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