Removing Brackets Practice Question

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Question 2

Remove the brackets and simplify the following expression.

Algebra expression 2(4x-2)-5(5x -3)

Answer

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Select and check your answer...

A. -3y + 1
B. -3x - 1
C. 3x - 1
D. 3x + 1

Step by Step Solution

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    Step 1

    First, let's remove the brackets in -(5x -3).

    Remove the brackets in -(5x-3)
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    Step 2

    Multiply -1 and -3 together. You will get -5x. Note that "-" is the same as "-1"

    Multiply -1 with 5x to get -5x
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    Step 3

    Now, multiply -1 and -3 together. You will get +3.

    Multiply -1 with -3x to get +3
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    Step 4

    Put back -5x +3 into the expression. Next, we remove the brackets in 2(4x -2).

    Remove the brackets in 2(4x-2)
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    Step 5

    Now, multiply 2 and 4x together. You will get +8x.

    Multiply 2 with 4x to get +8x
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    Step 6

    Now, multiply 2 and -2 together. You will get -4.

    Multiply 2 with -2 to get -4
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    Step 7

    Put back 8x -4 into the expression. The expression now becomes:

    The expression is now +8x -4 -5x +3

    Notice that this expression has like terms. Therefore, let's arrange the like terms together. The expression now becomes:

    Rearrange to  +8x -5x +3 -4
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    Step 8

    Now, simplify the expression by adding +3 and -4. You will get -1.

    Simplify by adding +3 and -4 to get -1
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    Step 9

    Now, simplify the expression by adding +8x and -5x. You will get 3x.

    Simplify by adding +8x  and -5x to get 3x
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    Step 10

    The expression becomes 3x-1. There is no more like terms, therefore this is the simplest expression. Clearly, the answer is C.

    The simplified expression is 3x -1