Explicație pas cu pas:
[tex]126 = {2}^{1} \times {3}^{2} \times {7}^{1} [/tex]
[tex]168 = {2}^{3} \times {3}^{1} \times {7}^{1} [/tex]
→
[tex]126 \times 168 = {2}^{x} \times {3}^{y} \times {7}^{z} [/tex]
[tex]{2}^{x} \times {3}^{y} \times {7}^{z} = {2}^{4} \times {3}^{3} \times {7}^{2}[/tex]
→
[tex]x = 4 \\ y = 3 \\ z = 2[/tex]
