What is the answer to 1/2 sqrt(20+x)=5 ?

The answer to 1/2 sqrt(20+x)=5 is x=80

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1/2 sqrt(20+x)=5

\frac{1}{2} 20 + x = 5

x = 80

Solution steps

\frac{1}{2} 20 + x = 5

Multiply both sides by

2

\frac{1}{2} 20 + x \cdot 2 = 5 \cdot 2

Simplify

20 + x = 10

Square both sides:

20 + x = 100

20 + x = 100

Solve

20 + x = 100 : x = 80

x = 80

Verify Solutions:

x = 80

True

The solution is

x = 80

x - 1 + 2 x + 1 - x = 4

x - 3 = 10 x + 9

(x - 2)^{\frac{2}{3}} = 100

b + 5 = 11

x + 7 = 9