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McGraw Hill Glencoe Algebra 1, 2012

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McGraw Hill Glencoe Algebra 1, 2012 View details

1. Graphing Linear Equations

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Exercise 70 Page 162

Apply inverse operations to isolate A.

A=2S/n-t

Practice makes perfect

To solve the given formula for A, we will use the Properties of Equality to apply inverse operations on the equation. Remember, only like terms can be combined.

S=n/2(A+t)

LHS * 2=RHS* 2

2S=2* n/2(A+t)

DenomMultFracToNumber

2 * a/2= a

2S=n(A+t)

.LHS /n.=.RHS /n.

2S/n=n(A+t)/n

▼

Simplify right-hand side

a/b=.a /n./.b /n.

2S/n=A+t/1

a/1=a

2S/n=A+t

LHS-t=RHS-t

2S/n-t=A

Rearrange equation

A=2S/n-t

Subchapter links

Check Your Understanding p.159

Practice and Problem Solving p.159-161

H.O.T. Problems p.161

Standardized Test Practice p.162

Spiral Review p.162

Skills Review p.162