Question

Afla x din egalitate
{3(2•2+1)+[2-(6-2•2):2]}:{[3(2x+1)+6]:3-1}=4
Vă rog mult

Answer 1

[3•5+(2-2:2)]:[(6x+3+6):3-1]=4
16:(2x+3-1)=4
2x+2=16:4=4
2x=4-2=2
x=2:2=1

Answer 2

(3*5+(2-(6-4):2)):((6x+3+6):3-1)=4
(15+(2-2:2)):((6x+9):3-1)=4
(15+1):(2x+3-1)=4
16:(2x+2)=4
8:(x+1)=4
4x+4=8
4x=8-4
4x=4
x=4:4
x=1