Question

determina pe a din egalitatile:2+2×{2+2×[2+2×(2-2÷a)]}=22

Answer 1

2+2×{2+2×[2+2×(2-2:a)]}=22
2×{2+2×[2+2×(2-2:a)]}=22-2
2×{2+2×[2+2×(2-2:a)]}=20
2+2×[2+2×(2-2:a)]=20:2
2+2×[2+2×(2-2:a)]=10
2×[2+2×(2-2:a)]=10-2
2×[2+2×(2-2:a)]=8
2+2×(2-2:a)=8:2
2+2×(2-2:a)=4
2×(2-2:a)=4-2
2×(2-2:a)=2
2-2:a=2:2
2-2:a=1
2:a=1+2
2:a=3
a=3×2
a=6