Solve for x: 4(x + 2) = 3(x − 2) A) −2 B)−4 C) −10 D) −14

Question

Solve for x: 4(x + 2) = 3(x − 2)

A) −2
B)−4
C) −10
D) −14

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Ruby 2 weeks 2021-09-14T21:33:35+00:00 1 Answer 0

Answers ( )

    0
    2021-09-14T21:34:40+00:00

    4(x+2)=3(x-2)

    Multiply the first bracket by 4

    Multiply the second bracket by 3

    4x+8=3x-6

    Move 3x to the left hand side, whenever moving a number with a letter the sign changes ( positive 3x to negative 3x)

    4x-3x+8=3x-3x-6

    x+8=-6

    Move positive 8 to the right hand side

    x+8-8=-6-8

    x=-14

    Check answer by using substitution method

    Use x=-14 into both of the equations

    4(-14+2)=3(-14-2)

    -56+8=-42-6

    -48=-48

    Answer is -14- D)

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