Question

x supra 3+40 supra 100×2x supra 3+180=x
Va rog ajutati-ma

Answer 1

x/3+40/100x2x/3+180=x

x/3+4/10x2x/3+180/1=x (simplificam 40/100 cu 10)

x/3+8x/30+180/1=x (efectuam inmultirea)

10x/30+8x/30+180/1=x (amplificam prima fractie pentru a efectua adunarea)

18x/30+ 5400/300 = x ( amplificam 180/1 cu 30 pentru a avea acelasi numitor peste tot )

18x+5400/30 = x

5400=30x-18x
5400=12x
x=450