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What is the solution set of the equation - 52 – 15| = 10?
-
=
A {2,4}
B. {7}
CO{4}
D.{-1,7}
SIA
PLS HELP

What Is The Solution Set Of The Equation 52 15 10 A 24 B 7 CO4 D17 SIA PLS HELP class=

Sagot :

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Answer:

{-1,7}

Step-by-step explanation:

1/2 | 5x-15| = 10

Multiply each side by 2

1/2 *2 | 5x-15| = 10*2

| 5x-15| = 20

Absolute value equations have two solutions, one positive and one negative

5x-15 = 20     5x-15 = -20

Add 15 to all sides

5x-15+15 = 20+15          5x-15 +15 = -20+15

5x= 35                                   5x=-5

Divide by 5

5x/5 = 35/5                              5x/5 = -5/5

x=7                                                   x=-1

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