Question

Determinati x din egalitatile: 7+ {2+3 ·[4+5·(6- x)]:7}:8=8
Va rog ma puteti ajuta dau coroana !!!!!!

Answer 1

7{2+3·[4+5·(6-x)]:7}:8=8
7{2+3·[4+30-5x]:7}:8=8
7{2+12+90-15x:7}:8=8
7{114-15x:7}:8=8
791-105:7:8=8
791-15x:8=8
15x:8=783
15x=783 x 8
x=6264/15
x=25