2.1-2.2 Solving One and Two Step Equations
Addition/Subtraction/Multiplication/Division
Properties of Equality: If a=b then...
a+c=b+c
a-c=b-c
a x c=b x c
= (When )
Solution of an Equation- value of a variable that makes a situation true.
examples- x+5=10 (x=5), x-17=3 (x=20)
To solve an equation,you must use the opposites.
examples-
x+17 = 20
-17 -17
x = 3
= 2
x8 x8
x = 16
To solve an equation with a fraction with the variable, you need to multiply by the reciprocal.
example-
x=3
() ()x=3(4)
x=12
To solve a two step equation, you do the same thing you would do in a one step equation but make sure you do the order of operation backwards!
example-
3x-4 = 12
+4 +4
3x = 16
3 3
x = 5.33
This clip shows how to do the steps in order for the one step equations
This video goes in to detail about how to put the steps together in order to find the anwser in two step equations.
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