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2 years ago

- 5 + 7 m - 20 = 20 - 2 m

Mathematics

1 answer:

SVEN [57.7K]2 years ago

7 0

Answer:

m=5

Step-by-step explanation:

collecting like terms you have;

-5-20-20 = -2m-7m

-45= -9m

dividing both sides by -9 to get m will become

-45÷-9=5

where minus divides minus and 45 divided by 9 will be equal to 5

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So, the solutions of our equation are $x=4$ and $x=7$ . Lets replace each solution in our original equation to check if they are valid solutions:
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