Question

solve the following 1 upon 60- 1 upon 42 + 1 upon 90​

Answer 1

Answer:

1/60 - 1/42 + 1/90

=30+20/180 - 1/42

=50/180 -1/42

=5/18 - 1/42

=35-3/126

=32/126

=16/63 is your answer

Answer 2

Answer

Answer is

Step-by-step explanation:

1/60 -1/42 +1/90

LCM OF 60 and 42 and 90 = 1260

so, 1/60 × 21/21 = 21/1260

1/42 × 30/30 = 30/1260

1/90 × 14/14 = 14/1260

i.e. 21/1260 - 30/1260 + 14/1260

= (20-30×14)/1260

= -140/1260

Answer = -1/9

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