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Alchen [17]
3 years ago
10

15/4 - 7x = 9 pls answer step by step fast

Mathematics
2 answers:
patriot [66]3 years ago
4 0

15/4-7x= 9

Move 15/4 to the other side. Sign changes from +15/4 to -15/4

15/4-15/4-7x= 9-15/4

-7x=9-15/4

Find the common denominator for 9 which is 4. Multiply by 4 .

9(4)= 36

36/4-15/4= 21/4

-7x= 21/4

Multiply by -1/7x on both sides

-7(-1/7)x= 21/4(-1/7)

Cross out 21 and -7 , divide by 7

21/7=3

-7/7=-1

3/4*-1/1= -3/4

Answer: -3/4

Ad libitum [116K]3 years ago
3 0

Answer:

x = - \frac{3}{4}

Step-by-step explanation:

Multiply through by 4 to clear the fraction

15 - 28x = 36 ( subtract 15 from both sides )

- 28x = 21 ( divide both sides by - 28 )

x = \frac{21}{-28} = - \frac{3}{4}

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in isosceles triangle the length of a leg is 17 cm, the vase is 16 cm. find the length of the altitude to the base
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What is the equation of the following graph in vertex form? parabolic function going down from the left through the point negati
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A parabolic function's key characteristic is either having 2 x-intercepts or 2 y-intercepts. That is the reason why the standard form of parabolic functions are:

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4a is the lactus rectum
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This is also called vertex form because the vertex (h,k) is grouped according to their variable.
 
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Rearrange the equation such that all x terms are on one side of the equation
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The final equation is 
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6 0
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