Determine whether a number is a solution

An equation is a statement indicating that two expressions are equal

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QUESTION OF
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Views #: 1300
Questions #: 10
Time: 10 minutes
Pass Score: 80.0%
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An _______ is a statement indicating that two expressions are equal

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Explanation

All equations contain an _______ symbol

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In this equation x + 5 = 15

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  1. Determine the left side (1)
  2. Determine the right side (2)
  3. The letter x is the variable (or the (3))
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x + 5
unknown
15
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Explanation

This equation x + 5 = 15 can be written as 15 = x + 5

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Assign true, false, or unknown to the following equations

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  1. (1) 6 + 3 = 9
  2. (2) 2 + 4 = 7
  3. (3) x + 5 = 15
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false
true
unknown
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Explanation

Will equation x + 5 = 15 be true if we substitute 10 for x?

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Will equation x + 5 = 15 be true if we substitute 1 for x?

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A solution for a true equation

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A number that makes an equation true when substituted for the variable is called a (1) and it is said to (2) the equation.

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An equation is the same as an expression

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Is 9 a solution of 3y - 1 = 2y + 7?

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0
sin cos tan
sin-1 cos-1 tan-1 π e
xy x3 x2 ex 10x
y√x 3√x √x ln log
( ) 1/x % n!
7 8 9 + MS
4 5 6 – M+
1 2 3 × M-
0 . EXP ÷ MR
± RND C = MC
Keywords
Year 8