Question 1189098: Identify the property illustrated:
If x + 5 = 6, then 3x + 15 = 18
Answer by Theo(13342)   (Show Source):
You can put this solution on YOUR website! if you multiply both sides of an equation by the same number, the equality is preserved.
you have x + 5 = 6
multiply both sides by 3 to get:
3x + 15 = 18
the equality is preserved.
the left side of the equation is still equal to the right side of the equation.
in the first equation, solve for x to get:
x = 1
you get this by subtracting 5 from both sides of the equation.
in the second equation, solve for x to get:
x = 1
you get this by doing the following:
subtract 15 from both sides of the equation to get:
3x = 3
divide both sides of the equation by 3 to geet:
x = 1
here's a reference
https://www.mathplanet.com/education/pre-algebra/inequalities-and-one-step-equations/different-ways-to-solve-equations
i believe the property will state that, if you multiply both side of an equation by the same number, the equality is preserved, or something like that.
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