Combine Like Terms
Simplify: 3x+5x
What is 8x?
Simplify: 3(x+4)
What is 3x+12?
Solve: x+7=12
x=5
Write x ≥ 4 in words.
x is greater than or equal to 4
Find the mistake: 2x+3x=6x
2x + 3x = 5x
Simplify: 7x+3−2x+5
What is 5x+8?
Simplify: -2(x+5)
What is -2x-10?
Solve: 3x=18
x=6
Write x < 3 in interval notation
(-∞,3)
Find the mistake: 3(x+2)=3x+2
Distribute to both terms: 3x+6
Simplify: 4x+2y−3x+5y
What is x+7y?
Simplify: 5(2x-3)+4
What is 10x-11?
Solve: 4x-7=17
x=6
Write [-2,5) as a compound inequality.
-2 ≤ x < 5
Find the mistake: 4x-5=11
4x=6
Add 5, giving 4x=16
Simplify: 3(2x+1)+4x−5
What is 10x-2?
Simplify: -3(2x-4)+5x
What is -x+12?
Solve: 5x+3=2x+18
x=5
Solve 3x-5 > 10. Give the answer in inequality AND interval notation.
x > 5; (5,∞)
Find the mistake: -3x>12
x>-4
Flip the inequality: x<-4
Simplify: 4(2x−3)−3(x+2)
What is 5x-18?
Simplify: -2(3x-5)+4(x-1)
What is -2x+6?
Solve: 4(x-2)+3=2x+9
x=7
Write (-∞,-2]∪(4,∞) as an inequality.
x ≤ -2 or x > 4
Find the mistake: 2(x+3)-4=10
2x+3-4=10
Distribute 2 to both terms: 2x+6-4=10