4x+12=20
-12 -12
——————
4x=8
divide by 4 on both sides
x=2
84% -Justin
90% -Stephanie
Stephanie scored 6 points higher.
Answer:3,657 boxes
Step-by-step explanation:
Multiply 1,219 by 3 because it’s 3 times as many
3x+2−x=11x−9
Step 1: Simplify both sides of the equation.
3x+2−x=11x−93x+2+−x=11x+−9(3x+−)(2)=11x−9
(Combine Like Terms)
2x+2=11x−92x+2=11x−9
Step 2: Subtract 11x from both sides.
2x+2−11x=11x−9−11x−9x+2=−9
Step 3: Subtract 2 from both sides.
−9x+2−2=−9−2−9x=−11
Step 4: Divide both sides by -9.
−9x−9=−11−9x=119
ANSWER: 11/9
Hope it helps