Question

Afla numarul necunoscut:
2/15+9/15+x=1
x=
x=

Answer 1

Amplificam pe 1 cu 15 ca sa ajungem la 15/15 si adunam in prima: 11/15+x=15/15, x=15/15-11/15, x=4/15

Answer 2

x=1-(9/15)-(2/15)
x=1-(0.6)-0.1(3)
x=0.4-0.1(3)
x=0.27