Plug In Numbers for One Step Equations

Solve this equation:
2+x=18

• x = 16

• x = 20

• x = 18

• x = -16

Tags

CCSS.6.EE.B.7

Solve this equation:
2x+12=40

• x = 20

• x = -14

• x = 14

• x = 28

Tags

CCSS.7.EE.B.4A

Solve this equation:
5x + 10 = 50 

• x = 8

• x = -8

• x = 16

• x = 10

Tags

CCSS.7.EE.B.4A

Solve this equation:
5 + 1/9x + 16 = 23

• x = -18

• x = 18

• x = 5

• x = 9

Tags

CCSS.7.EE.B.4A

Solve for "n".

1 - 11n = 67

Mathematical Equivalence

ON

Tags

CCSS.7.EE.B.4A

How can you CONFIRM that the solution you got is correct?

• Solve it again and see if you get the same answer

• Plug the solution in for the variable and see if you get a true equation

• Ask your friend

• Hope for the best

Given the equation

0.5x - 3.5 = 0.2x - 0.5

The new equation, after isolating the variable on one side and the constant on the other would be...?

• 0.7x = 4

• 0.3x = 4

• 0.7x = 3

• 0.3x = 3

What should you do to answer this question: "Which points are solutions to the following equation: -3x+y=-2 ........ A.(2,4) B.(3,7) C.(10,28)"

• I should PLUG IN X & Y to test the coordinates.

• I should SOLVE FOR Y and pick the coefficients.

• I should SOLVE FOR X and pick the zeros.

• I should SET IT EQUAL TO ZERO and solve.