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23 June, 07:06

Simplify the expression 8 - 2x + 12x - 3. Show that your answer is true for x=2

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Answers (2)
  1. 23 June, 07:14
    0
    Simplified Expression if x=2:

    8-2x+12x-3 Original Problem

    8-2 (2) + 12 (2) - 3 Substitute 2 in for variable "x"

    8-4+24-3 Subtract 4 from 8

    4+24-3 Subtract 3 from 24

    4+21 Add 4 to 21

    25 The answer is 25 if x=2

    Simplified Expression w/o x=2:

    8-2x+12x-3 Original Problem

    -2x+12x+5 Subtract 3 from 8

    10x+5 Add - 2x to 12x

    10x+5 Simplified without x=2

    To check if x=2:

    10x+5 Original Problem

    10 (2) + 5 Substitute 2 in for the variable "x"

    20+5 Multiply 10 by 2

    25 Add 5

    25 Final Answer

    The step (s) to get to the answer I got is on the right sides of the equation (s).
  2. 23 June, 07:20
    0
    8 - 2x + 12x - 3

    8 + (-2x + 12x) - 3

    8 + 10x - 3

    8-3 + 10x

    5 + 10x

    10x + 5
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