Question

Afla-l pe a din:
[48+50x100:(28:a+3x2)-14]x[(50-4x5)+(143-4x6)]=42316

Answer 1

Răspuns:

a=17,67

Explicație pas cu pas:

[48+50×100:(28:a+6)-14]×[(50-20)+(143-24)]=42316

[48+50×100:(28:a+6)-14]×(30+119)=42316

[48+50×100:(28:a+6)-14]×149=42316

48+50×100:(28:a+6)-14=42316:149

48+50×100:(28:a+6)-14=284

48+50×100:(28:a+6)=284+14

48+50×100:(28:a+6)=298

50×100:(28:a+6)=298-48

50×100:(28:a+6)=250

100:(28:a+6)=250:50

100÷(28:a+6)=5

28:a+6=5×100

28:a+6=500

28:a=500-6

28:a=494

a=494:28

a=17,67