Answer:
15 - 5x = 5 · 3 - 5 · x = 5(3 - x)
The answer is 10 hoped that helped
Answer:

Step-by-step explanation:
{90° = m∠1 + m∠2
{105° = 2m∠1 - m∠2
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All you have left to do is this:

So, your two angle measures are 
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The greatest possible error in a measurement is the greatest number which is allowed for approximation assuming the number is obtained by approximation.
The greatest possible error is usually half of the place value of the last digit of the number.
Given the measurement of

oz.
This is equivalent to 11.125 oz.
The place value of the last digit (i.e. 5), is thousandth or 0.001
Therefore, the greatest possible error of

oz is 0.001 / 2 = 0.0005 oz
The point where the lines intersect is the solution to the system of equations.
(x, y) = (2, 3)