Question

ex 9 va rog cat mai repede​

Answer 1

Răspuns:

Explicație pas cu pas:

a). 3/28+x=23/28

x=23/28-3/28

x=20/28

b). 87/144-x=5/12

x=87/144-5/12

x=87/144-60/144

x=27/144

c). 9/11-40/143=x

177/143-40/143=x

x=77/143