Răspuns :
a+17,34 x3,5+11,56=249,56
a+17,34x3,5=249,56-11,56
=238
a+17,34=238:35
=68
a=68-17,34
a=50,66
a+17,34x3,5=249,56-11,56
=238
a+17,34=238:35
=68
a=68-17,34
a=50,66
(x+17,34)•3,5+11,56=249,56
(x+17,34)•3,5=249,56-11,56
(x+17,34)•3,5=238
x+17,34=238:3,5
x+17,34=68
x=68-17,34
x=50,66