Error Analysis

Find the error

• Adding 2x to 3x

• Subtracting 5 from both sides

• Adding 2x to -2x

• Dividing by 5 on both sides

Find the error.

• Adding 5x to each side instead of 5

• Subtracting 7 from both sides

• Dividing -4 by 2 equals 2

• Dividing both sides by 2

Find the error.

• Subtracting 1 from both sides

• Dividing by 6 on both sides

• 3(2x+1) equals 6x +1

• x equals 3/4

Find the error.

• Adding 1 to both sides

• Distributing the negative sign when multiplying –3(x + 2)

• Subtracting 6 from both sides

• x should equal 5/3

Find the error.

• Adding 5x to -3x equals 8x

• Subtracting 7 from both sides

• Dividing by 8 on both sides

• Simplifying -4/8 to -1/2

Find the error.

• Using distributive property to multiply 2 times (3 – 10x)

• Adding 20x to both sides

• Adding 2 to both sides

• 4 divided by 24 does not equal 1/6

Find the error.

• Subtracting 1 from both sides

• Dividing by 3 on both sides

• Subtracting by 5 on each side

• -x does not equal x

Find the error.

• Subtracting 6 from both sides

• Dividing by 2 on both sides

• 4 divided by 2 does not equal 2

• Subtracting x from one side, but not the other

Find the error.

• Dividing by 5 on both sides

• Combining 7x and -2x to equal 5x

• Subtracting by 6 on both sides

• Flipping the numerator and denominator for x

Find the error.

• Dividing by 2 on both sides

• Subtracting by 4 on both sides

• Dividing by 3 on both sides

• x should equal -1