40x^-4 y^-6/(over)10x^-5 y^5

take it another

x=-7

step-by-step explanation:

x+3=-10

-10+3=-7

x=-7

0.0076, if you meant 4.125 divided by 0.03125 it would be 132

step-by-step explanation:

first you have to move the decimal in 0.03125 over until its behind the 5 which is 5 places over. now the number is 3125

then you have to move the decimal in 4.125, 5 places over. now the number is 4,112,500.

now you divide like you would normally would and get 0.0076