simplify question 1)= - 13/5+12/7 question 2)= - 31/7× - 1/2 question 3)= - 7/8÷21/32 . give the answer correct I will mark you as brainlest and I will follow. please give the answer fast
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Step-by-step explanation:
(1) -13/15 + 12/7 = find LCM.....-13×7/5×7+12×5/7×5
= 65/35 + 60/35
=125/35= 25/7 = 3.5
(2) -31/7×-1/2= 31/14=2.2
(3) -7/8 ÷21/32=4/3=1.3
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