# math

how do you solve these problems?

1.2x/3 + 1/3 - x/8= 2/3

2. 3n + 9/10 + n/5= -2 3/10

3. 3k/4 - 28 - 2k/3 = 37

thank you can you please show me step by step how you got the answer?

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3. 👁 129
1. I will do one for you, and you try the other two

2.
3n + 9/10 + n/5= -2 3/10
3n + 9/10 + n/5= -23/10
looks like 10 is the lowest common denominator, so multiply each term by 10

30n + 9 + 2n = -23
32n = - 23 - 9
32n = - 32
n = -1

hint: for the first, multiply each term by 24
for the third, multiply each term by 12

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posted by Reiny
2. i got for # 3 8/13 and plugged in the number for the letters and got it wrong. what is the correct way to solve it thank you

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posted by Sara!
3. #3
3k/4 - 28 - 2k/3 = 37
times 12
9k - 336 - 8k = 444
k = 444+336
k = 780

check:
Left side = 3(780)/4 - 28 - 2(780)/3
= 585 - 28 - 520
= 37
= right side

My answer is correct, how did you get 8/13 ?

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posted by Reiny

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