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Exercitiile 4&5... please!

Exercitiile 4amp5 Please class=

Răspuns :

4.
(a+28)×24-48=3024
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(a+28)×24=3024+48
(a+28)×24=3072
a+28=3072:24
a+28=128
a=128-28
a=100

5.
a×16×16:16=17
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a×16×16=17×16
a×16×16=272
a×16=272:16
a×16=17
a=17×16
a=272


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