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Mnenie [13.5K]
3 years ago
9

What is X? 2.3x-8.7=0.8x-4.2 pLS hELP

Mathematics
1 answer:
daser333 [38]3 years ago
5 0

Answer:

x = 45/17

Step-by-step explanation:

We can move all x to 1 side and all the numbers to another. You can add 8.7 on both sides and get that 2.3x = 0.8x + 4.5. Next, we subtract by 0.8x on both sides to get that 1.7x = 4.5, where we can then divide by 17/10 on both sides to get that x is equal to 45/10 * 10/17, so that means that x = 45/17.

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Can some one help me slove this equation -5=7+3r
Kitty [74]
-5=7+3r
(minus the 7 to the -5)
-12=3r
(divide 3r to -12)
r=-4 !!
7 0
3 years ago
Read 2 more answers
118° (10x+2)° solve for x and z
Ghella [55]

Answer:

Simplifying

10x + -2 = 118

Reorder the terms:

-2 + 10x = 118

Solving

-2 + 10x = 118

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '2' to each side of the equation.

-2 + 2 + 10x = 118 + 2

Combine like terms: -2 + 2 = 0

0 + 10x = 118 + 2

10x = 118 + 2

<em><u>Combine like terms: 118 + 2 = 120</u></em>

<em><u>Combine like terms: 118 + 2 = 12010x = 120</u></em>

<em><u>Combine like terms: 118 + 2 = 12010x = 120Divide each side by '10'.</u></em>

<em><u>Combine like terms: 118 + 2 = 12010x = 120Divide each side by '10'.x = 12</u></em>

<em><u>Combine like terms: 118 + 2 = 12010x = 120Divide each side by '10'.x = 12Simplifying</u></em>

<em><u>Combine like terms: 118 + 2 = 12010x = 120Divide each side by '10'.x = 12Simplifyingx = 12</u></em>

6 0
3 years ago
OkHow can you find a common denominator for 1/3 and 1/5
ExtremeBDS [4]

Answer:

the common denominator for <u>1/3 and 1/5 is 1/15 So, 1/3 = 5/15 and 1/5 = 3/15</u>

<em>Step-by-step explanation:</em>

3 and 5 (The denominators) have to have a LCM (least common multiple)

Their least common multiple is <u>15</u>

That makes 1/3 = 5/15

And that makes 1/5 = 3/15

Your Welcome!

5 0
3 years ago
The submarine is 217 feet below sea level. Identify the integer that represent the opposite of its location and its absolute val
igomit [66]

Answer:

217 ft

Step-by-step explanation:

Sea level is 0 height.

217 ft below sea level is -217 ft.

The opposite of -217 ft is 217 ft.

|-217 ft| = 217 ft

3 0
2 years ago
6x+4=5x-6 what is the solution for it
Oksi-84 [34.3K]

Answer:

x=-10

Step-by-step explanation:

6x+4=5x-6

Subtract 5x from each side

6x-5x+4=5x-5x-6

x +4 = -6

subtract 4 from each side

x+4-4 = -6-4

x=-10

8 0
4 years ago
Read 2 more answers
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