Step by Step Solving Multi Step

Solve for n: -72 = 6(n + -2)

• n = 10

• n= 35/3

• n = -10

• No Solution

What is the first step in solving the equation 2a - 4(a - 5) = 10

• Add 4 to both sides

• Add the 2a and a 

• Distribute 4 to a and -5

• Distribute -4 to a and -5

Find the Error
What error did the student make when solving the equation:
1/5x + 6 = 3/5x + 5
1x + 6 = 3x + 5
-2x + 6 = 5
-2x = -1
x = 1/2

• The student found an incorrect common denominator

• The student did not multiply all terms by the common denominator

• The student did not use opposite operations appropriately

• The student did not correctly eliminate the variable from one side of the equation

The goal of solving a one, two, or multi-step equations is to:

• Find the constant

• Find the coefficient

• Find the value of the variable

• Guess and check

Solve:
3(3x - 6) = 18

• x = 4

• x = -4

• no solution

• infinite solutions

Solve each inequality.

x - 14 < -8

• A

• B

• C

• D

Solve.

• a > -24

• a > 6

• a > -36

• a > -10

Solve:

7x + 19 = -2x + 55

• 4

• 14.8

• 8.2

• -4

Solve:

2(2x + 3) = -6(x + 9)

• 2

• 6

• -6

• 7.5