Question

1. [3×(x+2,7)-4,2]:1,5=7,2
2.Un recipient are forma unui cub cu aria unei fete egala cu 0,25 metri patrati .Cati litri de apa incap in recipient?

Answer 1

[3×(x+2,7)-4,2]:1,6=7,2 [3×2,7x-4,2]:1,6=7,2
[8,1x-4,2]:1,6=7,2
0,39x:1,6=7,2
x= -0,39×1,6 -7,2
x=-624-7,2
x=631