Question

what number should added to -2/7 to get 4/5​

Answer 1

Answer:

HERE IS YOUR ANSWER

Step-by-step explanation:

The given ratio is 8:11. And you want it to become 4:5.

So add x to both digits as

(8+x):(11+x) = 4:5, or

4(11+x) = 5(8+x), or

44+4x = 40+5x, or

5x-4x = 44–40, or

x = 4

HELPFUL _BY EXAMPLE ༆