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9966 [12]
3 years ago
5

What is the solution set for 6x-(3x+4)=x-40

Mathematics
2 answers:
tatyana61 [14]3 years ago
7 0

Answer:

x = 22

Step-by-step explanation:

6x - (3x + 4) = x - 40

6x - 3x - 4 = x - 40   <distribute the negative

3x - 4 = x - 40   <combine like terms

-x           -x   <subtract x from both sides

2x - 4 = 40

   +4      +4   <add 4 to both sides

2x = 44   <divide both sides by 2

x = 22

Eddi Din [679]3 years ago
5 0
First, open the parentheses (make sure you distribute the '-':

6x - 3x - 4 = x - 40
3x - 4 = x - 40
2x = -36
x = -18

The solution set is {-18}
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Step-by-step explanation:

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A man drove his car at 80km per hr for 1 and a quarter hrs .He rested for 45mins and then covered 240km, at the same time. Calcu
prisoha [69]

Answer:

Probably 128 km/h, but maybe 98.5 km/h. See below.

Step-by-step explanation:

What does "at the same time" mean?

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240 km in 1.25 hour

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Total time: 1.25 hour + 1.25 hour = 2.5 hour

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