Question

calculați scoțând factor comun. Va rog,dau 60 de puncte
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Answer 1

Răspuns:

Explicație pas cu pas:

a)

= 77*( ⁵⁾3/7+⁷⁾2/5)

=77*(15/35+14/35)

= 77*29/35

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b)

=3*( ¹⁶⁾5+⁴⁾1/4+17/16)

= 3*(80+4+17)/16

=3*101/16

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c)

=7*(2/5+⁵⁾3-12/5)

= 7*(2+15-12)/5

= 7*5/5

= 7*1

=7

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d)

=3/19*( 3/7+4/7)

= 3/19 *7/7

= 3/19*1

= 3/19

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e)

= (2*3) / (23*5)- (2*3)/( 5*46)

= 6/115-6/230

= 6/115*(1-1/2)

= 6/115 *1/2

=6/230

= 3 /115

f)

=5*(²⁾7/11+3/22-¹¹⁾1/2)

=5* (14+3-11)/22

= 5*6/22

= 30/22

= 15/11