Solving equations by adding and subtractingPage
1
1
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Slide 1
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Sōp
1. Simplify: -2(x + 3)
2. Simplify: 3[(5 + 72) – 20]
= -2x - 6
= 3[(5 + 49) – 20]
= 3[(54) – 20]
= 3[34]
= 102
Slide 2
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3.1
Solving Equations by Adding and Subtracting
Slide 3
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t + 5
=
11
-5
-5
t
=
6
+ 0
Example 1
Slide 4
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Now you try…
y + 3
=
-2
-3
-3
y
=
-5
+ 0
Example 2
Slide 5
.PNG "a - 4")
a - 4
=
-10
+4
+4
a
=
-6
+ 0
Example 3
Slide 6
.PNG "Now you try…")
Now you try…
x - 6
=
-6
+6
+6
x
=
0
+ 0
Example 4
Slide 7
.PNG "-4 + x")
-4 + x
=
-30
+4
+4
x
=
-26
0+
Example 5
Slide 8
.PNG "Now you try…")
Now you try…
4.6 + m
=
0
-4.6
- 4.6
m
=
-4.6
0 +
Example 6
Slide 9
.PNG "+ b")
+ b
=
-
Example 7
Now try a more challenging problem…
- +
0 +
b
=
1
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Contents
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