Question

sabendo que A=(0,5×2,32)-1,0 e B=(0,66×3,5+0,4) determine A+B.​

Answer 1

$\left(0.5\times \:2.32\right)-1+\left(0.66\times \:3.5+0.4\right)\\\\=0.5\times \:2.32-1+0.66\times \:3.5+0.4\\\\=1.16-1+0.66\times \:3.5+0.4\\\\=1.16-1+2.31+0.4\\\\\mathrm{Somar/subtrair:}\:1.16-1+2.31+0.4=2.87\\\\=2.87$