1) \(16,2\times3,7+5,7\times16,2-7,8\times4,8-4,6\times7,8\)
\(=16,2.\left(3,7\times5,7\right)-7,8.\left(4,8\times4,6\right)\)
\(=16,2.9,4-7,8.9,4\)
\(=9,4.\left(16,2-7,8\right)\)
\(=9,4.8,4=78,96\)
2) \(11,2+12,3+13,4-12,6-11,5-10,4\)
\(=\left(11,2-10,4\right)+\left(12,3-11,5\right)+\left(13,4-12,6\right)\)
\(=0,8+0,8+0,8\)
\(=0,8.3=2,4\)
1) 16,2×3,7+5,7×16,2−7,8×4,8−4,6×7,816,2×3,7+5,7×16,2−7,8×4,8−4,6×7,8
=16,2.(3,7×5,7)−7,8.(4,8×4,6)=16,2.(3,7×5,7)−7,8.(4,8×4,6)
=16,2.9,4−7,8.9,4=16,2.9,4−7,8.9,4
=9,4.(16,2−7,8)=9,4.(16,2−7,8)
=9,4.8,4=78,96=9,4.8,4=78,96
2) 11,2+12,3+13,4−12,6−11,5−10,411,2+12,3+13,4−12,6−11,5−10,4
=(11,2−10,4)+(12,3−11,5)+(13,4−12,6)=(11,2−10,4)+(12,3−11,5)+(13,4−12,6)
=0,8+0,8+0,8=0,8+0,8+0,8
=0,8.3=2,4