One Step Equations

Subtraction

100

x-5=3

x=8

200

x-47=239

x=286

300

x-63=-32

x=31

400

x-16.2=82.4

x=98.6

500

-14.65=x+12.8

x=-27.45

Addition

100

x+5=17

x=12

200

x+42=80

x=38

300

x+16=7

x=-9

400

x=63.5+23.72

x=87.22

500

-12.65+-74.35=x

x=-87

Multiplication

100

3x=15

x=5

200

-4x=24

x=-6

300

4.25x=-13.6

x=-3.2

400

-115x=4830

x=-42

500

(-2/5)x=3/10

x=-3/4

Division

100

x/3=4

x=12

200

x/14=23

x=322

300

x/18=-12

x=-216

400

x/7.2=3.65

x=26.28

500

-43=x/-1.6

x=68.8

Rules of One Step Equationss

100

What is it called when you clear all numbers around the variable?

Isolating the Variable.

200

If I subtract 12 to one side, what else must I do?

Subtract 12 from the other side.

300

How do you eliminate a number?

ex: say the equation is 4x-12=32, how would I get rid of the -12?

You must apply the opposite math operation.

ex: add 12

400

To isolate the variable in the equation -x=12, you must multiply or divide both sides by this integer.

What is -1

500

This math term describes the inverted form of a fraction, which you multiply both sides by to solve an equation like 2/3x=8 in a single step.

What is a reciprocal or multiplacative inverse.