All categories

3 years ago

Find the value of x needed to make the equation true. 8x – 4 = 13x + 6

Mathematics

1 answer:

Kipish [7]3 years ago

7 0

Answer:

x = -2

Step-by-step explanation:

First, you need to subtract 8x from both sides:

8x – 4 = 13x + 6

-8x -8x

____________

-4 = 5x + 6

Then, subtract 6 from both sides:

-4 = 5x + 6

-6 - 6

________

-10 = 5x

Lastly, divide both sides by 5:

-10 = 5x

-2 = x

You might be interested in

Marco would like to hang a banner over his shoe store. He has two ladders and would like to know how high above the ground each

GuDViN [60]

13 divided by 11.3 is 1.150442477876106. So 15 by 1.150442477876106 and you get 13.03846162772485. Just round it to the nearest tenth and you get 13.0.

5 0

2 years ago

3/10 divided by -3 1/2

Nitella [24]

The answer to this question is -3/35

3 0

3 years ago

If you understand may you please help me?

Darina [25.2K]

Answer:

Step-by-step explanation:

3 0

3 years ago

If I am 17 years old and my sophomore junior or senior in high school

SSSSS [86.1K]

I'm 17 and I'm in my Junior year of high school.

3 0

3 years ago

The average weight of 3 containers A,B and C is 3.2kg. Container A is twice as heavy as container B. Containers B is 400 g heavi

dlinn [17]

Answer:

The weight of container C is 2.1kg.

Step-by-step explanation:

This question is solved using a system of equations.

I am going to say that:

x is the weight of container A.

y is the weight of container B.

z is the weight of container C.

The average weight of 3 containers A,B and C is 3.2kg.

This means that the total weight is 3*3.2 = 9.6kg. So

$x + y + z = 9.6$

Container A is twice as heavy as container B.

This means that $x = 2y$ .

Containers B is 400 g heavier than container C.

400g is 0.4kg. So

This means that $y = z + 0.4$ , or $z = y - 0.4$

Replacing y and z as functions of x in the first equation:

$x + y + z = 9.6$

$2y + y + y - 0.4 = 9.6$

$4y = 10$

$y = \frac{10}{4} = 2.5$

Container C

$z = y - 0.4 = 2.5 - 0.4 = 2.1$

The weight of container C is 2.1kg.

4 0

3 years ago