3 times the sum of n and 2 is 12.
2n – 3 = 12
The sum of a number n and 4
2n + 4 = 12
Two sides of a triangle have equal measures, and the third side is four more than the length of one of the sides. The perimeter of the triangle is 12 cm.
Yusef is 2 more than 3 times as old as his brother Musa. If Yusef is 12 years old, write an equation that could be used to determine Musa's age. (Let n represent Musa's age).
3(2n + 1)
n – 2 = 12
3 times a number n increased by 1
4 less than a number n
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3(n + 2) = 12
Three less than twice a number n is 12
n + 4
Joaquin has 4 more than twice as many concert t-shirts than Matt. If Joaquin has 12 concert t-shirts, write an equation that could be used to determine the number of t-shirts that Matt has? (Let n represent the number of Matt's t-shirts)
3n + 4 = 12
3n + 2 = 12
What expression could be used to find the area of the rectangle shown below?
A number n decreased by 2 is 12.
3n + 1
n – 4