Question

Aflati termenul necunoscut x din relatia

Answer 1

(245:5+5·x):9+89=100
(49+5·x):9=100-89
(49+5·x):9=11
49+5·x=11·9
49+5·x=99
5·x=99-49
5·x=50
x=50:5
x=10

Answer 2

(245:5+5•x):9+89=100
(49+5•x):9=100-89
(49+5•x):9=11
(49+5•x)=11•9
49+5•x=99
5•x=99-49
5•x=50
x=50:5
x=10