Eight times a number is the same as 90 decreased by the number

8x = 90 - x

I just need 20 characters to submit the answer, dont mind this

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐

4 + 5 7/9= 9 7/9

step-by-step explanation: