Unit 2 Linear Equations Review

Simplifying Expressions

100

-7(2x-5)

-14x+35

200

#4 on SG

5x-6(4x+6)

-19x-36

300

#5 on the study guide

-7(1+5y)+2(y-3)

33y-13

400

-3m-10(3m-2)

-33m+20

500

-4(3x-10)+5(x-3)

-7x+25

Solving Equations

100

#6 on the SG

-11+5x=x-7

x=1

200

15 + x/3=19

x=12

300

-5(2x-6)=-20

x=5

400

(x-4)/5=12

x=64

500

20n-2-11n=2(n+6)

n=2

No Solution, Infinitely Many Solutions, or 1 solution

100

9x-7=9x+1

No solution

200

12x=5x

One solution at x = 0

300

x+5=6x-5x+5

Infinitely Many Solutions

400

#10 on the study guide

195=3(1+8x)

one solution at x=8

500

6(3+2x)=2(6x+9)

Infinitely Many Solutions

Multi-variable Equations

100

Solve for t:

d=rt

t=d/r

200

Solve for h:

A=1/2 Bh

h=2A/B

300

Solve for y:

2x+y=5

y=5-2x

400

Solve for y:

8x+2y=10

y=5-4x

500

Solve for b.

ab-c=d

b=(d+c)/a

Mixed Review

100

How many terms are in the algebraic expression...

5y+x-3z-9

4

200

What is the coefficient of the expression 15-7x?

-7

300

Are the following two equations equivalent?

12(x-5)=60

x-5=5

Yes... the second equation is the first equation with both sides divided by 12.

400

the sum of x squared and 7

x²+7

500

If x = 2 is the solution of 5x-18=-8, what does that mean?

When you plug in x=2, it creates a true statement.