What is the answer to sqrt(2y-5)+4=8 ?

The answer to sqrt(2y-5)+4=8 is y= 21/2

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sqrt(2y-5)+4=8

2 y - 5 + 4 = 8

y = \frac{21}{2}

Decimal Notation

y = 10.5

Solution steps

2 y - 5 + 4 = 8

Move

4

to the right side

2 y - 5 = 4

Square both sides:

2 y - 5 = 16

2 y - 5 = 16

Solve

2 y - 5 = 16 : y = \frac{21}{2}

y = \frac{21}{2}

Verify Solutions:

y = \frac{21}{2}

True

The solution is

y = \frac{21}{2}

3 k - 20 = 15 - 2 k

y = 7

7 - x + 5 = x

4 x - 5 + 8 = 2

13 = x^{2} + 1 2^{2}