what is (-1/2 + 3/4) ÷ (1/4 - 3/5)
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Answer:
-1/10
Step-by-step explanation:
(-1/2 + 3/4) ÷ (1/4 - 3/5)
L.C.M of 2 and 4 is 4
L.C.M of 4 and 5 is 20
= ( -1/2 x 2/2 + 3/4 ) ÷ ( 1/4 x 5/5 - 3/5 x 4 / 4)
= ( -2/4 + 3/4 ) ÷ ( 5/20 - 12/20 )
= ( -2 + 3 ) / 4 ÷ ( 5 - 12 ) / 20
= 1/4 ÷ ( -7 ) /20
L.C.M of 4 and 20 is 20
= 1/4 x 5/5 ÷ (-7)/20
= 5/20 ÷ (-7 ) /20
= ( 5-7)/20 = -2/20 = -1/10
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