Question

Aflati valoarea lui x din:
[(280:4-x)•2+100:5]:3=[(60:6+5x)•2+4•5]:3
Va rog este urgentt dau coroana

Answer 1

[(70-x)*2+20]:3=[(10+5x)*2+20]:3
(140-2x+20)/3=(20+10x+20)/3
140-2x+20=20+10x+20
140+20-40=10x+2x
120=12x
x=10