Question

Afla numerele necunoscute :(64-3x8-5xa):2=10
(6-30:a+5x5):5=5

Answer 1

Răspuns:

(64-3x8-5xa):2=10

(64-24-5xa):2=10

(40-5xa):2=10

40-5xa=10x2

40-5xa=20

5xa=40+20

5xa=60

a=60:5

a=12

(6-30:a+5x5):5=5

(6-30:a+25):5=5

(6-30:a+25)=5x5

6-30:a+25=25

6-30:a=25-25

6-30:a=0

30:a=0+6

30:a=6

a=30:6

a=5

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