Question

afla numerele n si n stind ca suma loreste280 iar diferenta lor este 180

Answer 1

a+b=280
a-b=180
a=280-b
280-b-b=180
280-2*b=180
-2b=180-280
2b=280-180
2b=100
b=100:2
b=50
a+50=280
a=280-50
a=230
230+50=280
230-50=180

Answer 2

n+m=280

n-m=180→ n=180+m

180+m+m=280
m+m=280-180
2m=100
m=100:2=50

n=180+m=180+50=230