Question

Aflati x a) 2,82x+1,71=4,3x-2,73 b)x-10 supra 3= x+2 supra 5

Answer 1

a)
2,82x+1,71=4,3x-2,73
1,71+2,73=4,3x-2,82x
4,44=1,48x/:1,48
x=3
b)
x-10/3=x+2/5 apmlifica pe prima cu 5 si pe a doua cu 3
5 (x-10)=3 (x+2)
5x-50=3x+6
5x-3x=6+50
2x=56/:2
x=28