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4 years ago

How do you solve 4(3-6n)-4n=-156

Mathematics

2 answers:

Goshia [24]4 years ago

7 0

.........................................

ludmilkaskok [199]4 years ago

6 0

Answer:

n = 6

Step-by-step explanation:

4(3-6n)-4n=-156 (by PEDMAS, solve parentheses first)

(4)(3) - (4)(6n) - 4n = - 156

12 - 24n - 4n = -156

12 - 28n = -156 (subtract 12 from both sides)

-28n = -156 - 12

-28n = -168 (divide both sides by -28)

n = -168 / (-28)

n = 6

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3 years ago

There are a total of 21 students in the choir and the drama club. There are 7 more students in the choir than the drama club. Wr

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The number of students in the drama club is 7 and the number in the choir is 14

Step-by-step explanation:

X = Number of students in choir club

Y = Number of students in drama club

First equation:

x + y = 21

Since we know that there are 7 more students in the choir club than the drama club, that means:

x + 7 = y

A little trick that you can do to find y is this:

21 students in the choir and drama club - 7

=> 14

Meaning that y is 14

So lets go back into our second equation:

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