Question

What is the solution set for 2n + 5 = 9, given the replacement set {0,1,2,3}?

n = 0

n = 1

n = 2

n = 3

Answer 1

Hey there!

2n + 5 = 9

SUBTRACT 5 to BOTH SIDES

2n + 5 - 5 = 9 - 5

CANCEL out: 5 - 5 because it gives you 0

KEEP: 9 - 5 because it help solve for the n-value

NEW EQUATION: 2n = 9 - 5

SIMPLIFY IT!

2n = 4

DIVIDE 2 to BOTH SIDES

2n/2 = 4/2

CANCEL out: 2/2 because it give you 1

KEEP: 4/2 because it give you the n-value

NEW EQUATION: n = 4/2

SIMPLIFY IT!

n = 2

Therefore, your answer is: n = 2

Good luck on your assignment & enjoy your day!

~Amphitrite1040:)