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morpeh [17]
3 years ago
6

What is the value of x in the equation 3x - y = 30, when y = 15?

Mathematics
2 answers:
Daniel [21]3 years ago
7 0

Answer:

x = 15

Step-by-step explanation:

3x - y = 30

Given;

y = 15

To find;

value of 'x'

Putting the value of y in the given equation;

3x - 15 = 30

3x = 30 + 15

3x = 45

x = 45/3

x = 15

Juliette [100K]3 years ago
3 0

Answer:

<h2>x = 15</h2>

Step-by-step explanation:

<h3>3x - y = 30</h3><h3 /><h3>let y = 15</h3><h3 /><h3>3x - 15 = 30</h3><h3 /><h3>3x = 30 + 15</h3><h3 /><h3>3x = 45</h3><h3 /><h3>x = 45/3</h3><h3 /><h3>x = 15</h3><h3 /><h3 /><h3>Let's check:</h3><h3 /><h3>3x - y = 30</h3><h3 /><h3>3(15) - 15 = 30</h3><h3 /><h3>45 - 15 = 30</h3><h3 /><h3>30 = 30</h3>

\tt{ \green{P} \orange{s} \red{y} \blue{x} \pink{c} \purple{h} \green{i} e}

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