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ajutati-ma va rog [5×(2×x+3)+4×(2×x+3)]÷5=27

Răspuns :

(10x+15+8x+12):5=27
18x+27=5*27
18x+27=135
18x=135-27
18x=108
x=108:18
x=6

10x+15+8x+12:5=27
18x+27=5x27
18x+27=135
18x=135-27
18x=108
x=108:18
x=6