Solve 5x + 6y = 18 for y how do i sovle this?

👨🏻‍🏫 學術台數學

[匿名]

2009-06-13 5:08 pm

Im total confused. How would i check a question like this? this is what i have
5x + 6y = 18

6y = -5x + 18

y = -5x/6 + 18/6

y = -5x/6 + 3

更新1:

5x + 6y = 18 6y = -5x + 18 y = -5x/6 + 18/6 y = -5x/6 + 3 and then Using your answer , find the corresponding value of y when x =12. This is what i have. I need to know how to check it Show your work here: y = -5*12/6 + 3 y = -60/6 + 3 y = -10 + 3 y = -7

更新2:

HOW WOULD I CHECK IT. THANK YOU FOR ALL YOUR HELP

回答 (8)

[匿名]

2009-06-13 5:22 pm

✔ 最佳答案

5x + 6y = 18

6y = 18 - 5x

y= (18/6) - (5x/6)

y= 3 - (5x/6)

When x = 12,

y = 3 - [(5*12)/6]

y = - 7

Your Answer is good...

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[匿名]

2009-06-13 5:15 pm

then substitute y = -5x/6 + 3 for y in the first equation so its
5x+6*-5x/6 + 3 = 18
5x+6*-5x/6 = 15
5x + 6 * -5x = 90
6 * -5x = 90 - 5x
6 = 90 + x
x = -84

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[匿名]

2016-12-14 6:14 pm

here is the way you isolate Y 5x + 6y = 18 circulate the 5x to the different element via inverting 6y = 18 - 5x do the comparable with the 6 x y via deviding each little thing via 6 this could appear as if this 6y / 6 = (18 - 5x) /6 all of us comprehend that 6 X Y / 6 is the comparable as in simple terms Y so simplified... y = (18 - 5x) / 6 wish this facilitates.

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[匿名]

2009-06-13 6:03 pm

5x + 6y = 18

Solve for y

Solution:

y = 1/6(18 - 5x)

y = 0166667 (18 - 5x)

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[匿名]

2009-06-13 5:24 pm

5x + 6y = 18
6y = 18 - 5x
y = (18 - 5x) / 6

y = 18 - 5(12) / 6
y = (18 - 60) / 6
y = -42/6
y = -7

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An ESL Learner

2009-06-13 5:22 pm

5x + 6y = 18
6y = -5x + 18
y = (-5x + 18)/6
y = -5x/6 + 18/6
y = -5/6(x) + 3

Find y if x = 12.
y = -5/6(12) + 3
y = -5(2) + 3
y = -10 + 3
y = -7

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nozar nazari

2009-06-13 5:19 pm

y=(18-5x)/6=3-(5x/6)

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[匿名]

2009-06-13 5:11 pm

I'm confused right now too! lol =)

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