equations, equations, equations 3102.3.11 solve multi-step linear equations with one variable
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Equations, Equations, Equations
3102.3.11 Solve multi-step linear equations with one variable.
Solving Equations by Adding and Subtracting
x – 8 = 17
+ 8 = +8
x = 25
What happens when two signs are beside each other??
x + (-3) = -9 Do Leave, Change, Opposite
x - 3 = -9 The changes are in red! Now SOLVE!!
+ 3 = +3 Do the opposite & Add 3 to both sides!
x = -6
Try this one!!
y – ( -8) = 15
y + 8 = 15
- 8 - 8
y = 7
Solving Equations Using Multiplication and Division
-5x = 25
-5 -5
x = -5
Try a Division Problem
96
x
1
x = 54
Solving Two-Step Equations
5x + 2 = 27
- 2 = -2
5x = 25
5 5
x = 5
Try this one!!
6x + 9 = 27
- 9 = -9
6x = 18
6 6
x = 3
Try this one!
+ 8 = + 8
x = 6
3 1x = 18
8 23
x
Solving Equations with Variables on Both Sides
2x – 8 = x + 17
-x - x
1x - 8 = 17
+ 8 = + 8
1x = 25 or
x = 25
Try this one!
3(5x + 2) = 2(3x – 6) 15x + 6 = 6x - 12 -6x -6x 9x + 6 = - 12 - 6 = - 6 9x = - 18 9 9 x = -2
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