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2014-09-23T11:27:28+03:00
A+b=34
a/b=1/2  b=2a
a+2a=34
3a=34
a=34/3
b=34/3*2=68/3
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2014-09-23T11:28:58+03:00
A + b = 34
a : b = 1/2
a = 1b/2
b/2 + b = 34, aducem la acelasi numitor
b + 2b = 68
3b = 68
b = 68/3
a = 34 - b
a = 34 - 68/3, aducem la acelasi numitor
3a = 102 - 68
3a = 34
a = 34/3
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