10) five times the difference of twice a number and three is twenty-five.

5

Step-by-step explanation:

5×(4×2-3) =

5×5 = 25

so the twice a number would be 4 and you get 8-3 = 5

I hope im correct

no, the equation would be invalid since they are both not equal.

step-by-step explanation:

here you got

4y-6+4y 2-9

first, you would simplify the equation on the form.

4y-6+4y 2-9

then, move all the terms that contains a y to the left and all the other terms to the right.

+4y-4y+-9-6

finally, you will simplify the left and the right side of the equation.

y=-3

step-by-step explanation: