Question:
The model below represents 4x + (-4) = -2x + 8.
4 long green tiles and 4 square red tiles = 2 long red tiles and 8 square green tiles.
What is the value of x when solving the equation 4x + (-4) = -2x + 8 using the algebra tiles?
x = -4
x = -2
x = 2
x = 4
Answer:
x = 2
Step-by-step explanation:
Given
4x + (-4) = -2x + 8 which represents a model of coloured tiles of various lengths (shapes)
Required
Find x
To find x, we'll solve the expression 4x + (-4) = -2x + 8 using the knowledge of algebra.
4x + (-4) = -2x + 8
Open bracket
4x - 4 = -2x + 8
Collect like terms
4x + 2x = 4 + 8
Perform addition arithmetic operation on both sides of the equation
6x = 12
Multiply both sides by ⅙
⅙ * 6x = ⅙ * 12
x = 2
Hence, the value of x that satisfies the expression 4x + (-4) = -2x + 8 is 2