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Rashid [163]
3 years ago
7

-1(x+2)=2(3x-6) Please solve

Mathematics
2 answers:
EleoNora [17]3 years ago
7 0
-1(x + 2) = 2(3x - 6)

First, simplify 1 × (x + 2) to (x + 2) / Your problem should look like: -x - 2 = 2(3x - 6)
Second, expand. / Your problem should look like: -x - 2 = 6x - 12
Third, add x to both sides. / Your problem should look like: -2 = 6x - 12 + x
Fourth, simplify 6x - 12 + x to get 7x - 12. / Your problem should look like: -2 = 7x - 12
Fifth, add 12 to both sides. / Your problem should look like: -2 + 12 = 7x
Sixth, add -2 + 12 to get 10. / Your problem should look like: 10 = 7x
Seventh, divide both sides by 7. / Your problem should look like: \frac{10}{7}  = x
Eighth, switch your sides. / Your problem should look like: x =  \frac{10}{7}

Answer: x = \frac{10}{7}
Answer as decimal: 1.4286

Korvikt [17]3 years ago
6 0
-1(x+2)=2(3x-6)
-1(x+2)=2(3x-6)distributhing -1 through parantheses
-1x+(-1)*2=2(3x-6)
-x-2=2(3x-6) distributhing 2 through parantheses
-x-2=2*3x-2*6
-x-2=6x-2*6
-x-2=6x-12    add x 
-2=6x-12+x
-2=7x-12        add 12
-2+12=7x
10=7x       divide by 7  
x= \frac{10}{7}
Answer : x= 1 3/7


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astraxan [27]

Answer:

The answer to your question is:   x = 7; y = 6

Step-by-step explanation:

                                             2x+y=20             ( 1 )  Multiply by 5

                                             6x−5y=12            ( 2 )

                               5 (2x+y=20)    = 10x + 5y = 100

                                          10x + 5y = 100

                                            6x − 5y =   12             Eliminate y

                                          16 x        = 112

                                           x = 112 / 16

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The coordinates of B are (14, -10).

<h3>How to find mid point?</h3>

The midpoint is already know . we can use it to find the coordinates of B.

Therefore,

(xₙ, yₙ) = (x₁ + x₂ / 2, y₁ + y₂ / 2)

Hence,

M(5, - 4) and A(-4, 2)

The coordinates of B are as follows:

(5, - 4)  = (-4 + x₂ / 2 , 2 + y₂ / 2)

5 = -4 + x₂ / 2

10 = -4 + x₂

x₂ = 14

hence,

-4 = 2 + y₂ / 2

-8  = 2 + y₂

y₂ = - 10

Therefore, the coordinates of B are (14, -10)

Learn more about midpoint here: brainly.com/question/25377004

#SPJ1

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