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Annette [7]
2 years ago
11

D1-5 - (-9) E 1-9 - (-5) Decide if each statement about the distance between-2 and -7 is true or fals Choose True or False for e

ach statement True False a. 1-2 - (-7) b. 1-2 - 71 c. 1-7-21 d. 1-7 - (-2) O​
Mathematics
1 answer:
Lera25 [3.4K]2 years ago
8 0

Answer:

false

Step-by-step explanation:

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2a(5-b)=3b+7 solve for b<br> Step by step
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<span>2a(5-b)=3b+7

<em>[open bracket]</em>
10a - 2ab = 3b + 7

<em>[solve for b, so we need to move all terms with b to the left]</em>
<em>[-3b on both sides]</em>
10a - 2ab - 3b = 3b + 7 - 3b
10a - 2ab - 3b = 7

<em>[move all those without b to the right]</em>
<em>[-10a on both side]</em>
10a - 2ab- 3b - 10a = 7 - 10a
-2ab - 3b = 7 - 10a

<em>[divide by -1 through to change b to be positive]</em>
2ab + 3b = 10a - 7

<em>[take b out as the common factor]</em>
</span>b(2a + 3) = 10a - 7<span>

<em>[divide by (2a+3) through]</em>
b = (10a -7)/(2a+3)


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