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  • 08-07-2019
  • Mathematics
contestada

Solve for x: 4(x + 2) = 3(x − 2)

A) −2
B)−4
C) −10
D) −14

Respuesta :

Аноним Аноним
  • 08-07-2019

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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