What is the answer to 1/4z-2/7=5/7

Multiple to remove the variable from the denominator.

z=1/4

Let's solve it.

1 2 5

- z - - = -

4 7 7

step 1. simplify both sides of the equation.

1 - 2 5

- z + - = -

4 7 7

step 2. add 2/7 to both sides.

1 - 2 2 5 2

- z + - + - = - + -

4 7 7 7 7

1

- z = 1

4

step 3. multiply. both sides by 4.

4 * 1

( - z) = (4) * (1)

4

z=4