Two Step Equations Rational Numbers

-8x - 15 = 25

• x = -4

• x = -5

• x = -6

• x = -7

Solve

• 5

• -6

• 6

• 21

2(6k-1)= -38

• k= 1

• k= 9

• k= -4

• k= -3

3(2x+5)=39

• x = 4

• x = 5

• x = 3

• x = -2

Solve for x: -3(x-8)=87

• x=-21

• x=21

• x=37

• x=-37

In the equation

x + 7 = 12

7 is being added to the variable, x.
How should you show your work to isolate the variable and solve the equation?

• Subtract 7 from both sides. The solution is x = 5.

• Add 7 to both sides.

  The solution is x = 19.

• Multiply both sides by 7 The solution is x = 84.

2x + 6 = 12

26 = 5a + 1

• a= 5 ⁴∕₅

• a= no solution

• a= 0

• a= 5

Write the equation for the model.

• 3x+6=-9

• -3x-6=9

• 3x+6=9

• 3x-6=-9

Pick the equation modeled.

• 3x + 1 = x - 5

• -3x + 1 = x - 5

• 3x + 1 = x - 3

• 3x - 1 = x - 5