\(18,7:0,125+37,4\left(0,25+0,5\right)\)
\(=18,7:0,125+37,4\cdot0,75\)
\(=18,7:0,125+18,7\cdot2\cdot0,75=18,7:0,125+18,7\cdot1,5\)
\(=18,7\cdot\left(\frac{1}{0,125}+1,5\right)=18,7\cdot9,5=177,65\)
t i ck nha
= 18,7 x 8 + 37,4 x 4 + 37,4 x 2
= (18,7 + 37,4) x ( 2 + 2 + 4 + 8)
= 56,1 x 16
= 897,6
ko nhanh ,mấy