solving equations
DESCRIPTION
By: Savana B ixler. Solving Equations. One step (subtraction). Subtraction:. 1). x+5=20 -5=-5 x=15. Subtract 5 from both sides. One step (addition). addition. Z-25=12 +25=+25 Z=37. Add 25 to both sides. One step (division). Division:. 3x=6 3=3 - PowerPoint PPT PresentationTRANSCRIPT
SOLVING EQUATIONSBy: Savana Bixler
One step(subtraction)
Subtraction:
1)
x+5=20
-5=-5
x=15
Subtract 5 from both sides
One step(addition)addition
Z-25=12
+25=+25
Z=37
Add 25 to both sides
One step(division)Division:
3x=6
3=3
X=2
Divide by 3 on both sides
One step(multiplication) Multiplication:
*6 (x/6)=5 *6
X=30
Multiply 6
Two step(addition, division)Addition and division:
3x-2=7
+2=+2
3x=9
3=3
X=3
Add 2 to both sides. Divide by 3 on both
sides.
Two step(subtraction, division) Subtraction and division:
3x+2=14
-2=-2
3x=12
3=3
X=4
Subtract 2 from both sides
Divide by 3 on both sides
Two step(addition, multiplication)Addition and multiplication:
z/2-6=8
+6=+6
*2 z/2=14 *2
Z=28
Add 6 to both sides Multiply 2 on both
sides
Two step(addition, multiplication) Addition and multiplication:
z/4-2=6
+2=+2
*4 z/4=8 *4
Z=32
Add 2 to both sides Multiply 4 on both
sides
Multi-step equation(two variables-same sides)Same sides:
2x+5x=49
7x=49
7 7
X=7
Combine like terms Divide by 7 on both
sides
Multi-step equation(two variables-different sides)Different sides:
7x-5=4x+8
-4x -4x
3x=13
3=3
X=4.333
Get your variables on the same sides by subtracting 2x from both sides
Add 5 to both sides Divide both sides by 3
Multi-step equations(using distributive property)Distributive property:
3(x+4)=9
3x+12=9
-12=-12
3x=-3
3=3
X=-1
Distribute the 2 from the out side of the parenthesis
Subtract 6 from both sides
Divide both sides by 3