Răspunsuri

  • Utilizator Brainly
2014-11-11T19:21:07+02:00
5(2x-11)+17=52|-17
5(2x-11)=52-17
5(2x-11)=35|:5
2x-11=35:5
2x-11=7|+11
2x=7+11
2x=18|:2
x=18:2
x=9
13 4 13
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2014-11-11T19:23:31+02:00
10x-55=52-17 => 10x-55=35 => 10x=35+55 => 10x=90 => x=90/10 => x=9