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topjm [15]
4 years ago
12

Solve the equation 3|3x-5 |= 30

Mathematics
2 answers:
Mice21 [21]4 years ago
7 0

Answer:

x = 5

Step-by-step explanation:

3|3x-5 |

3 x 3x - 3 x 5

3 x 3x = 9x

3 x 5 = 15

9x - 15 = 30    

add 15 to both sides

9x = 45  

divide each side by 9

x = 5

sergiy2304 [10]4 years ago
4 0

Answer:

x = 9

or

x = -1

Step-by-step explanation:

3|3x-5 |= 30 Multiply 3 with both 3x and -5

|15x - 15| = 30 then there are two possibilities

15x - 15 = 30 or 15x - 15 = -30

for first equation

15x - 15 = 30 add 15 to both sides of the equation

15x = 45 divide both sides by 15

x = 9

for second equation

15x - 15 = -30 add 15 to both sides

15x = -15 divide by 15

x = -1

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Answer:

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Step-by-step explanation:

The first thing you want to notice about this problem is that keyword "equilateral." That means every one of the sides are equal, and that means you can play around with the algebra to get your answer.

In an equilateral triangle, if you have two sides 4x + 1 and 6x - 6, these sides must be equal. To solve for x, simply set these two equations equal to each other. Note that you can pick any pairing of the three sides and get the same answer; I only chose these because they look easier.

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Step-by-step explanation:

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