x:(15×2)=3 c×(50×2)=500
x:30=3 c×100=500
x=30×3 c=500:100
x=90 c=5
________ __________
90:30=3 5×100=500
3=3 500=500
Ответ: x=90 Ответ:x=5
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x:(15×2)=3 c×(50×2)=500
x:30=3 c×100=500
x=30×3 c=500:100
x=90 c=5
________ __________
90:30=3 5×100=500
3=3 500=500
Ответ: x=90 Ответ:x=5