\(1,2\times68+2,4\times16\\ =1,2\times2\times34+2,4\times16\\ =2,4\times34+2,4\times16\\ =2,4\times\left(34+16\right)\\ =2,4\times50\\ =120\)
\(1,2\times68+2,4\times16\)
\(=1,2\times68+1,2\times2\times16\)
\(=1,2\times68+1,2\times32\)
\(=1,2\times\left(68+32\right)\)
\(=1,2\times100\)
\(=120\)
\(1,2×68+2,4×16\)
\(=1,2×2×34+2,4×16\)
\(=2,4×34+2,4×16\)
\(=2,4×(34+16)\)
\(=2,4×50\)
\(=120\)
1,2 x 68 + 2,4 x 16
= 1,2 x 2 x 34 +2,4 x 16
= 2,4 + 34 + 2,4 x16
= 2,4 x (34 + 16 )
= 2,4 x 50
= 120