Question

I think of a number, subtract 2 to and multiply it by 5. This gives me the same answer as when I take 7 from the number and treble it. What is my number?​

Answer 1

Answer:

The number is 0.75

Step-by-step explanation:

Analyze the question one statement at a time:

Let the number be $x$

Subtract 2; $x - 2$

Multiply by 5: $(x - 2) * 5$

The result equals $x - 7$

Required

Find the number (x)

The equation to work with is:

$(x - 2) * 5 = x - 7$

Open bracket

$5x - 10 = x - 7$

Collect like terms

$5x - x = 10 - 7$

$4x = 3$

Divide both sides by 4

$x = \frac{3}{4}$

$x = 0.75$