Question

ex.51


cine raspunde primul îi dau steluță dar răspunsul trebuie sa fie corect

Answer 1

1. a-b = 15 2. a = 90-21=68 a-b = 68-21= 47 3. b=1000-790=210 a-b=790-210=580 4. a=1195+385=1590 a+b=1580+385=1965 5. a+b=4700+2300=7000 a-b=4700-2300=2400 6. b=3900-2750=1150 a-b=2750-1150=1600 7. a=2260+1240=3500 a+b=2500+2260=4760