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FrozenT [24]
2 years ago
5

Solve the 9x+42=4x-13 The solution is x=

Mathematics
2 answers:
Anvisha [2.4K]2 years ago
8 0

You isolate the x term basically.

First you bring 4x from the right hand side to the left hand side and so the equation would be: 9x - 4x + 42 = -13

Then you bring 42 from the left hand side to the right hand side so the equation would look something like this: 9x - 4x = -13 - 42

Next subtract the x terms and the numbers on the right hand side too so you get: 5x = -55

Remove the coefficient from x and bring it to the right hand side with the operation as division. So you get: x = -55/5

Solve the division and you get: x = -11

:D

chubhunter [2.5K]2 years ago
3 0

Answer:

x = -11

Step-by-step explanation:

9x+42=4x-13

(add 13 to both sides)

9x+55=4x

(subtract 9x from both sides)

55=-5x

(divide by -5)

-11 = x

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2 years ago
Ellen must take 4 courses this semester. She has a list of 3 math courses and 4 science courses to from which to choose. (a) Ini
prisoha [69]

Answer:

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Step-by-step explanation:

We know that Ellen must take 4 courses this semester. She has a list of 3 math courses and 4 science courses.  

Therefore, she have total 7 courses.  

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7 0
3 years ago
Write a system of equations to describe the situation below, solve using elimination or substitution.
tangare [24]
X= mountain dew    y= coke

-(5x+5y=1160)
8x+5y=1523

-5x-5y=-1160
+
8x+5y=1523

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x=121 g of sugar in Mt. Dew

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4 0
3 years ago
B. Lance is 39 years old. Ted is 22 years old.
Rudiy27

Answer:

28 years

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