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Bibu34
a fost răspuns

rezolvati in N ecuatiile :100×[25-5×(x-3)+2]÷4=300

Răspuns :

Didi12342
100×[25-5×(x-3)+2]÷4=300
[25-5×(x-3)+2]÷4=300 : 100
[25-5×(x-3)+2]÷4= 3
25-5×(x-3)+2 = 3×4
25-5×(x-3)+2 = 12
25-5×(x-3) = 12 - 2
25 - 5×(x-3) = 10
5×(x-3) = 25 -10
5×(x-3) = 15
x - 3 = 15 : 5
x - 3 = 3
x = 3+3
x = 6

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