Răspuns :
a+b=153.45
a=b x 14
b x 14 + b=153.45
15b=153.45 | :15
b=10.23
a=153.45 - 10.23
a=143.22
a=b x 14
b x 14 + b=153.45
15b=153.45 | :15
b=10.23
a=153.45 - 10.23
a=143.22
a+b=153,45
b=a:14⇒a=14b
14b+b=153,45
15b=153,45
b=153,45:15
b=10,23
a=10,23*14
a=143,22
b=a:14⇒a=14b
14b+b=153,45
15b=153,45
b=153,45:15
b=10,23
a=10,23*14
a=143,22