section 7.3: solving multi-step equations with fractions and decimals
TRANSCRIPT
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TO START: 10 POINTS
549)32(3 y
593)24(2 nn
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CHAPTER 7: SOLVING EQUATIONS AND INEQUALITIES
Section 7.3: Solving Multi-step Equations with Fractions and Decimals
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SOLVING MULTI-STEP EQUATIONS!!!
Remember: When the coefficient of a variable in an equation is a fraction, you multiply by the reciprocal.
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SOLVING MULTI-STEP EQUATIONS!!!
Solve:
Multiply each side by the reciprocal
4
60x
125
4x
125
4x
4
5
4
5
15
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SOLVING MULTI-STEP EQUATIONS!!!
Solve:
Add 6 to each side
2
84x
2263
2x
2
3
2
3
42
2263
2x
Multiply each side by the reciprocal
283
2x
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SOLVING MULTI-STEP EQUATIONS-YOU TRY!!!
Solve:
Subtract 14 from each side
7
350x
211410
7 x
7
10
7
10
50
Multiply each side by the reciprocal35
10
7 x
211410
7 x
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SOLVING MULTI-STEP EQUATIONS-YOU TRY!!!
Solve:
Distribute!
2
21x
363
2x
2
3
0.51 or
Multiply each side by the reciprocal
73
2x
363
2x
Add 4 to each side343
2x
2
3
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HINT!!!
When you have to distribute a fraction, instead, multiply both sides by the reciprocal.
Example: 84
3
2x
2
3
2
3
124 x
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YOU TRY!!!
Solve: 267
4x
4
7
4
7 267
4x Multiply both sides by
the reciprocal
2
76 x Subtract 6 from each
side
62
7x
2
12
2
7
2
5
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YOU TRY AGAIN!!!
Solve: 2)2(4. a
Distributive property
28.4. a Subtract .8 from each side
2.14. a
3a
2)2(4. a
Divide each side by .4
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HOMEWORK!!!!!
Page 348:
1-8, 11-24