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motikmotik
3 years ago
14

-1/2(3x-4)+3x=5/6 Please help

Mathematics
1 answer:
Ksenya-84 [330]3 years ago
3 0

Answer:

  x = -7/9

Step-by-step explanation:

The usual recommendation is to clear fractions first. Here, you can do that by multiplying both sides of the equation by 6.

  6(-1/2(3x -4) +3x) = 6(5/6)

  -9x +12 +18x = 5 . . . . . . . . . simplify

  9x = -7 . . . . . . . . . . . . . . . . . subtract 12

  x = -7/9 . . . . . .divide by 9

__

Another way to do this is to eliminate parentheses first.

  -3/2x +2 +3x = 5/6

  3/2x = -7/6 . . . . . . . . . collect terms, subtract 2

  x = (-7/6)(2/3) = -7/9 . . . . multiply by 2/3

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Answer:

See below.

Step-by-step explanation:

Unit rate = 78 / 3/4

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4 0
3 years ago
Read 2 more answers
Express the product of (1/5x + 1) and (1/6x + 5/4) as a trinomial in simplest form
Greeley [361]
(\frac{1}{5}x+1)(\frac{1}{6}x+\frac{5}{4})

Use distributive property to remove the parentheses:

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8 0
1 year ago
Mr Ordonez gives his math students 34 quizzes during 17 weeks of school. If he gave the same number of quizzes each week, how ma
meriva
2.

Using division we get
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8 0
2 years ago
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kolbaska11 [484]

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4 0
2 years ago
Which Two Numbers Add Up To Negative 26 And Multiply To 11?
Fynjy0 [20]
Xy=11
x+y=-26


x+y=-26
minus x both sides
y=-26-x

sub for y
x(-26-x)=11
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add 26x+x^2 both sides
x^2+26x+11=0

ax^2+bx+c=0
x=\frac{-b+/- \sqrt{b^{2}-4ac} }{2a}


a=1
b=26
c=11

x=\frac{-26+/-\sqrt{26^{2}-4(1)(11)} }{2(1)}
x=\frac{-26+/-\sqrt{676-44} }{2}
x=\frac{-26+/-\sqrt{632} }{2}
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x=-13+\sqrt{158} or -13-\sqrt{158}

aprox

x=-0.420195 or -25.5698

those are the numbers
5 0
3 years ago
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