I think of a number, I multiply it by 4, I subtract 5, the result is the same as 2 times the number. What is the number
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Let the number be = y
Then multiply it by 4 = y × 4 = 4y, the subtract 5, and the result is the same as 2 times the number = y × 2 = 2y
4y - 5= 2y
Collect the like terms
4y-2y= 5
2y = 5
Divide both side by 2
2÷2y= 5÷ 2
y= 2.5
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