Question

Determinați a, nr natural știind ca a+3 supra 8 egal cu 5 supra 2
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Answer 1

Răspuns:

(a+3)/8=5/2

2(a+3)=8×5

2a+6=40

2a=40-6

a=34:2

a=17

Answer 2

$\it \dfrac{a+3}{8}= \dfrac{^{4)}5}{\ 2} \Rightarrow \dfrac{a+3}{8}= \dfrac{20}{8} \Rightarrow a+3=20|_{-3}\ \Rightarrow a=17$