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Marianna [84]
2 years ago
8

What is the sum of the solutions of 2x [×-1]-4=-2

Mathematics
2 answers:
Sati [7]2 years ago
6 0
Lets get stated :)

2x ( -1 ) - 4 = - 2
- 2x - 4 = - 2

Bring 4 to the right-hand side { You do addition to the opposite }
- 2x = - 2 + 4
- 2x = 2

Take - 2 to the other side in order to isolate x { Do division when you see multiplication }
\frac{-2x}{-2} = \frac{2}{-2}
x = -1

Quick check:
2 ( - 1 ) ( - 1 ) - 4 = - 2
2 - 4 = - 2
- 2 = - 2
So it is the correct value
Dafna11 [192]2 years ago
5 0
I believe the answer would be 2/4
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Answer:

The value of the equation for x is x=\frac{1119}{2} or 559.5.

Step-by-step explanation:

Consider the provided equation.

45(15x+20)-7x=56(12x-24)+6

We need to solve the equation for x.

Use the distributive property: a(b+c)=ab+ac

45(15x+20)-7x=56(12x-24)+6

675x+900-7x=672x-1344+6

Add the like terms.

668x+900=672x-1338

Isolate the variable as shown:

672x-668x=900+1338

4x=2238

x=\frac{2238}{4}

x=\frac{1119}{2}

Hence, the value of the equation for x is x=\frac{1119}{2} or 559.5.

4 0
3 years ago
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Answer:

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6 0
3 years ago
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Phoenix [80]

Answer:

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Step-by-step explanation:

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3 years ago
Mr. Garcia had some blueberries. He sold 2 3/4 kilograms of the blueberries and packed the rest equally into 9 bags. Each bag co
Snezhnost [94]

Answer:

Mr. Garcia had 5 kilograms of blueberries at first

Step-by-step explanation:

to make this easiest, we can imagine that we're undoing mr. garcia's actions.

So, we can start by 'unpacking' mr garcia's bags

we know that each of the nine bags had 1/4 kilograms, so we can multiply 1/4 by 9 to find the collective mass packed into bags

(remember, multiplication is repeated addition. we could also add 1/4 + 1/4 + 1/4... nine times, but this would take a while)

so,

1/4  x 9 = 9/4

(9 = 9/1 [if that is how you're used to multiplying a fraction])

Then, he also sold 2 3/4 kilograms

so, we can add 2 3/4 + 9/4 to find the total mass of the blueberries at first

2 3/4 + 9/4 =  2 + 12/4

(12/4 = 3)

2 + 3 = 5

So, Mr. Garcia had 5 kilograms of blueberries at first

7 0
2 years ago
-13=r/9+8<br> what is r equal to?
AURORKA [14]
Answer: r=(-189)

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then you multiply 9 with each side and get -189 = r

you can check by rewriting the problem with -189 as r and solving the equation

7 0
2 years ago
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