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Lubov Fominskaja [6]
3 years ago
7

I think of number, double it and add 11. I get 25 a) using the statement above, form an equation. Use the letter 'x' as a unknow

n number b) solve the equation
Mathematics
1 answer:
Misha Larkins [42]3 years ago
7 0

Answer:

x = 7

Step-by-step explanation:

Let

x = the unknown number

double it :

2x

add 11:

2x + 11

I get 25:

The equation is

2x + 11 = 25

2x = 25 - 12

2x = 14

Divide both sides by 2

x = 14/2

x = 7

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You can set up a system of equations for this problem. x= number of coach tickets and y = number of first class tickets.

$210x + $1200y = $10,230 (cost of coach ticket plus cost of first class tickets is total budget)

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Solve the second equation for y to get y = 11 - x, then plug that into the first equation and solve for x:

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