Will mark brainliest 4x+66 = 7x+15 what is x?

4x + 66 = 7x + 15     subtract 66 from both sides

4x = 7x - 51     subtract 7x from both sides

-3x = -51    divide both sides by (-3)

x = 17

x=17 and 17=x. *The answer should have positive sign.*

Step-by-step explanation:

addition property of equality is adding the same number to both sides of an equation does not change the equation.

a+c=b+c

subtraction property of equality is subtracting the same number from both sides of an equation does not change the equation.

a-c=b-c

subtract by 66 both sides of an equation.

4x+66-66=7x+15-66

simplify by equation.

4x=7x-51

subtract 7x both sides of an equation.

4x-7x=7x-51-7x

simplify.

-3x=-51

divide by -3 both sides of an equation.

-3x/-3=-51/-3

simplify.

51/3=17

51/17=3

17*3=51

3*17=51

It changes negative to positive.

x=17

Hope this helps!

Thanks!

Have a great day!

d. millimeters per hour.

step-by-step explanation:

we are given that,

carlo used a rain gauge to measure the amount of water his lawn is receiving from the sprinklers.

since, according to the options, we see that,

water cannot be measured by 'miles per hour', 'meters per second' and 'grams per seconds'.

we get that, the water can be measured by 'millimeters per hour'.

hence, the appropriate rate for describing the amount of water is 'millimeters per hour'.

any options?

step-by-step explanation: