Solve a problem. on one street of 350 lamps that is 70 lamps more, than on the second. how many lamps on two streets?

279
1) 350-70=280 lamps on 2nd Street of 2)280+350=630 lamps of Answer: 630 lamps 1) 350-70=280 (f.) on 2nd Street 2) 350+280=630 (f.) on 2 streets of Answer: 630 lamps.
208
Answer add