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Milagros Potter
Mathematics
20 February, 14:49
5-6 (a+2) = 7+a
What is a
+2
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2
)
Konner Hayes
20 February, 14:53
0
The first step here would be to distribute the parenthesis to the - 6.
5 - 6a - 12 = 7 + a
Next, combine all like terms. This means that the constants will combine, thus making the next step easier.
- 6a - 7 = 7 + a
Now, subtract the negative seven from the other side of the parenthesis. When I say add the negative, I mean that the sign (-) will flip, turning into a positive.
- 6a = 14 + a
Now do the same with the a, except this time the a will be subtracted from the other side due to it's positive sign being flipped into a negative.
- 7a = 14
Now you divide both sides by - 7. Almost done!
- 7a / - 7 = 14 / - 7
Finally the equation simplifies to:
a = - 2
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Pedro Price
20 February, 15:08
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Remmeber you can do anything to an equaiton as long as you do it to btoh sides
5-6 (a+2) = 7+a
distribute
5-6a-12=7+a
add like terms
-6a-7=7+a
add 6a both sides
-7=7+7a
minus 7 both sides
-14=7a
divide by 7
-2=a
a=-2
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