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3 years ago

Solve for x: 3(x – 5) = x – 1

Mathematics

2 answers:

andrew11 [14]3 years ago

7 0

X=7

3(x-5)=x-1
3x-15=x-1
3x=x+14
2x=14
14/2=7
X=7

NeTakaya3 years ago

6 0

Answer: the answer is 7

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Answer:

Step-by-step explanation:

2.5 = 5 * .5

1 = 1

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LCM = 2 * 5 * 7

If you include the 1/2, you will reduce the LCM to 35, but 70 will be left out of the LCM.

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Answer:

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3 years ago

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Viefleur [7K]

Answer:

75% bigger

Step-by-step explanation:

Let the first number be x and the second be y.

So:

$Average = \frac{x + y}{2}$

And:

$Average = (1 - 30\%) * x$ -----30% less than x

Substitute $Average = (1 - 30\%) * x$ in $Average = \frac{x + y}{2}$

$\frac{x + y}{2} = (1 - 30\%) * x$

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$\frac{x + y}{2} = 0.70x$

Cross multiply

$x + y = 0.70x * 2$

$x + y = 1.40x$

Collect like terms

$1.40x - x = y$

$0.40x = y$

Make x the subject

$x = \frac{y}{0.40}$

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$Average =(1 + 0.75)y$

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$Average =(1 + 75\%)y$

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3 years ago

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Answer:

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