\(37,78\times7,6+37,78\times2,4\\ =37,78\times\left(7,6+2,4\right)\\ =37,78\times10\\ =377,8\)
a) \(37,78\times7,6+37,78\times2,4\)
\(=37,78\times\left(7,6+2,4\right)\)
\(=37,78\times10\)
\(=377,8\)
a) 37,78×7,6+37,78×2,437,78×7,6+37,78×2,4
=37,78×(7,6+2,4)=37,78×(7,6+2,4)
=37,78×10=37,78×10
=377,8
b) 45,12 x 125 – 45,12 x 2 x 12 – 451,2 x 0,1
= 45,12 x 125 – 45,12 x 24 – 451,2 x 0,1
= 45,12 x (125-24-0,1)
= 45,12 x 100,9
= 4552,608