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a=b+25 ; (a+b):(a-b)=35 r=24​

Răspuns :

a=b+25

(a+b):(a-b)=35

(b+25+b):(b+25-b)=35

(2b+25):25=35

2b+25=875

2b=850

b=425

a=450

a=b+25

(a+b):(a-b)=35 ⇒ (b+25+b):(b+25-b)=35 ⇒ (2b+25):25=35 ⇒ 2b+25=875 ⇒ 2b=850 ⇒ b=425

a=450