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Algebra 1--solving equations Answer Key

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One Step
#1 You do the ____________ operation to solve a one-step equation. What is inverse?
#2 x - 10 = --3 What is 7?
#3 t + 15 = 25 What is 10?
#4 b*13 = 26 What is 2?
#5 n/30 = 6 What is 180?
Two Step
#1 9x -1 = 80 What is 9?
#2 6 = (n/2) - 10 What is 32?
#3 10 - 6v = --104 What is 19?
#4 9x -7 = --7 What is 0?
#5 (n + 16)/( --5 ) = 10 What is 34?
Multi Step
#1 What should you do first to solve this equation: 64 = -8(6 + 5n) What is the Distributive Property?
#2 8 = --( x + 4) What is --4?
#3 --20 = --4x a -- 6x What is 2?
#4 6 = 1 -- 2n + 5 What is 0?
#5 --(1 + 7 x) -- 6(-7 -- x) = 36 5
Two Sided
#1 8x -- 2 = --9 + 7 x What is --7?
#2 5p -- 14 = 8p + 4 What is --6?
#3 p -- 1 = 5p + 3 p -- 8 What is 1?
#4 2(4x -- 3) -- 8 = 4 + 2x What is 3?
#5 4m -- 4 = 4m What is no solution?
Multiple Variables
#1 17 = 5x + y What is y = 17 -- 5x?
#2 --10 = --3x -- 2y What is 5 -- (3x/2)?
#3 3x -- 3y = -- 19 What is x + (19/3)?
#4 Solve the interest formula for N: I = P*i*N What is N = I/(P*i)?
#5 solve the revenue formula for t: R = t(G -- E) What is t = R/(G -- E)?
Final Question
Sumalee won 40 super bouncy balls playing horseshoes at her school's game night. Later, she gave two to each of her friends. She only has 8 remaining. How many friends does she have? What is 16?