Difficult Equations

How do you solve a literal equation?

• By isolating the variable using inverse operations

• By dividing by zero

• By substituting values for the variables

• By rearranging the equation to solve for a letter

Solve -2 = 4r + s for s.

• s = -4r + 2

• s = 4r - 2

• s = -4r - 2

• s = 4r + 2

Solve for x.

z = xy

• x = ^z/_y

• x = ^y/_z

• x = yz

• x = z - y

Solve for r.

• A

• B

• C

• D

Solve the system. 

• (5, -6, 3)

• (2, 3, -1)

• (-4, 2, 5)

• No Solution

Solve the system.

• (1, 2, -2)

• (1, -3, -2)

• (-1, 3, 2)

• No Solution

Solve the system.

• (2, -2, 3)

• (2, 1, 4)

• (-2, 2, -3)

• No Solution

Solve the system.

• (3, -2, 4)

• (2, -3, 1)

• (-3, 2, -1)

• Infinitely many solutions

What is the value of z in the solution of the system?

Mathematical Equivalence

ON

Solve for z.

• A

• B

• C

• D