Solving for an Unknown

Using the "opposite operation" to "undo" and isolate the variable when solving an equation is more commonly called...

• Inverse operations

• math

• variable

• PEMDAS

When solving an equation for an unknown variable we use...

• guessing.

• inverse operations.

• always multiply.

• plug in two.

- 13 = x-9

solve for x

• 4

• -21

• -4

• 21

r - 18 = 27

• -45

• 45

• -9

• 9

What is the inverse operation needed to solve for p?765 = p - 254

• subtraction

• addition

• multiplication

• division

y + 2.93 = 36

• y = 38.93

• y = 34.93

• y = 6.7

• y = 33.07

-4 + x = -7

• x = -3

• x = 3

• x = -20

• x = -8

  m - (-3) = 11

• -13

• 14

• 8

• -8

What is the solution of 25 + k = 18

• 18

• -7

• 43

• 7

What value of a makes this equation true, a - 5 = -9

• -14

• 9

• 5

• -4