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  • Utilizator Brainly
2014-10-13T19:10:15+03:00
A+b=35
a-b=7=>a=b+7

b+7+b=35
2b+7=35
2b=28
b=14

a=14+7
a=21
35 4 35
2014-10-13T19:10:22+03:00
A+b=35 => a=35-b
a-b=7 => 35-b-b=7
35-2b=7
35-7=2b
28=2b
b=14
a=35-14=21
15 4 15