In order to keep the ship safe, you need to think ahead of the enemy. They have sent you a number, added 0.5 to that number and then multiplied the new result by 4. They then subtract 2 and divide the number by 2. The final answer is 48. What number did they send you?
Respuestas a la pregunta
Respuesta:
24
Explicación paso a paso:
The equation is posed as values are indicated.
{[(x + 0,5) x 4] – 2} ÷ 2 = 48
It is cleared as follows:
{[(x + 0,5) x 4] – 2} = 48 x 2
{[(x + 0,5) x 4] – 2} = 96
[(x + 0,5) x 4] = 96 + 2
[(x + 0,5) x 4] = 98
[(x + 0,5)] = 98 ÷ 4
x + 0,5 = 24,5
x = 24,5 – 0,5 = 24
X = 24
The number that they sent is : x = 24 .
The number that they sent is calculated through the approach and solution of a first degree equation, whose incognita is the number x, as follows:
[4*( x +0.5 ) -2 ]/2 = 48
4*( x +0.5) - 2 = 96
4*( x +0.5) = 98
x +0.5 = 98/4
x + 0.5 = 24.5
x = 24.5 - 0.5
x = 24
The solution of an equation is the value of the incognite (x) that meets equality.
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