Ch 7 Study

Equations

100

4x=4

x=1

200

45 + y = 177

y=132

300

r/6 = 20

r=120

400

45t=140

t=4

500

56+44+y=326

y=160

Is 160 a possible solution?

no

Vocab

100

What is inverse?

Opposite

200

What is a  co effecient

6h

A number multiplied by a variable

300

What is a solution?

An answer to an equation

400

The inverse of Multiplication and Division

Division and Multiplication

500

The inverse of addition and subtraction

Subtraction and Addition

2 step Equations

100

5+x=13

x=8

200

4x - 7 = 19

x=3

300

56 - 33 +x = 123

x=100

400

33y + 8=107

y=3

500

x/6 - 2 = 8

x=60

Inequalities

100

Open circle means?

The number is NOT a solution

200

x-3 >1

x>4

300

16 < m+9

m<7

400

x/5 <2

x<10

500

What is a possible solution set for 11k>33

Anything BIGGER than 3