### Home > CC3 > Chapter Ch2 > Lesson 2.1.5 > Problem 2-54

2-54.

Find the value of , given value of

*.*

whenSubstitute

in for .Multiply and simplify.

whenFollow the steps in part (a).

Remember to use the correct Order of Operations.

whenBegin by substituting

for in the equation.

whenRewrite the equation as

.