Question

daca a-b=15 a:b=4 cat e dublul sumei lor

Answer 1

b+15=a b*4=a
b+b+b+b=a
15=3b
b=15:3
b=5
a=5+15
a=20
20+15=35(suma lor)
35*2=70(dublul sumei lor)

Answer 2

• a-b=15→a=b+15
• a÷b=4→a=b×4
________________
? a,b
________________
a: |-----|-----|------|------|
b: |-----| 15
15÷3=5 (o parte/b)
5×4=20 (a)
20+15=35
35×2=70 (dublul sumei lor)
Bonne chance !