What is the value of ex 4/5x - 1/10 = 3/10

4/5x−1/10=3/10

SIMPLIFY

4/5x+−1/10=3/10

ADD 1/10 TO BOTH SIDES

4/5x+−1/10+1/10=3/10+1/10

MULTIPLY BOTH SIDES BY 5/4

(5/4)*(4/5x)=(5/4)*(2/5)

x=1/2

The value is 1/2. First, you multiply both sides by 10. Then move the constant to the right. After that, you add the numbers and divide both sides by 8.

step-by-step explanation:

12: 00 p.m. to 7: 00 p.m. is a total of 7 hours.

4: 00 p.m. to 7: 00 p.m. is a total of 3 hours.

this means that from 4: 00 p.m to 7: 00 p.m. this represents 3/7 of what was lost from 12: 00 p.m. to 7: 00 p.m.

after knowing this, after doing 11,600 - 6,800 = 4,800

4,800 represents 3/7 of what was lost for 7 hours.

we then divide 4,800 by 3 which gets 1,600.

because we know that 1,600 represents 1/7 of how much water was lost, we just have to multiply by 7, which gets 11,200.   after adding 11,200 to how much water was left at 7: 00 p.m. which was 6,800. 11,200 + 6,800 = 18,000

this means that the pool originally had 18,000 gallons in the pool.

you can also check your work by doing 18,000 - 4(1600), which becomes           1800 - 6400 which gets you 11,600.

step-by-step explanation:

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