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Dmitry_Shevchenko [17]
2 years ago
6

Explain how to solve the equation 21 = m +14. What is the value of m?

Mathematics
2 answers:
Katyanochek1 [597]2 years ago
6 0

Answer:

m = 7

Step-by-step explanation:

21 = m + 14

21 - 14 = m

m = 7

sdas [7]2 years ago
4 0

Answer:

21=m+14

21-14=m+14-14

7=m

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The table can be used to determine the solution to the system of equations, 2y − x = 8, and y − 2x = −5. Which solution can be u
SIZIF [17.4K]
The answer is (6, 7)

This is the system of two equations:
<span>2y − x = 8
y − 2x = −5
_____
Express the second equation in the term of y:
2y - x = 8
y = 2x - 5
_____
Substitute y in the first equation:
2(2x - 5) - x = 8
4x - 10 - x = 8
4x - x = 10 + 8
3x = 18
x = 18/3
x = 6

Since x = 6 and y = 2x - 5, then:
y = 2 * 6 - 5 
y = 12 - 5
y = 7

Therefore, (x, y) = (6, 7)</span>
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3 years ago
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