One-Step equations (+)
a + 3 = 8
a=5
a + 3 = 8
- 3 -3
a = 5
a - 5 = 4
a=9
a - 5 = 4
+5 +5
a = 9
Give me an example of a variable.
any letter
s, x, n, w, y, z, ...
x + 8 = 12
x=4
x + 8 = 12
- 8 -8
x = 4
a - 10 = 13
a=23
a - 10 = 13
+10 +10
a = 23
Define inverse operation
The opposite operation
The inverse operation for + is -
The inverse operation for x is divide
a + 9.4= 16.6
a=7.2
a + 9.4 =16.6
- 9.4 -9.4
a = 7.2
a - 11.5 = 30
a=41.5
a - 11.5 = 30
+11.5 +11.5
a = 41.5
What is the inverse operation of addition?
Subtraction
x + 1/2 = 1
x = 1/2
9/5=r-8/5
a = 17/5 or 3 2/5
9/5 = r - 8/5
+8/5 +8/5
17/5 = r
Name the 4 operations.
Addition, Subtraction, Multiplication, and Division
a + 86 = 98
a=-12
a + 86 = 98
- 86 -86
a = 12
a - 19.2 = 55.6
a=74.8
a - 19.2 = 55.6
+19.2 +19.2
a = 74.8
What's the inverse operation of division?
Multiplication