Solving by Substitution

What is the first step in solving with substitution?

• 5(3x+8) = 5

• 5x + 2(3x+8) = 5

• (3x+8) = 5

• 5x + 2y = (3x + 8)

Solve the following system using substitution: x=-3y-17 2x+3y=-7

When solving with substitution, what is the first step?

• 2x - 3(3-x) = 21

• 2(3 - x) - 3y = 21

• (2x - 3y) = 21

• (3-x) = 21

Solve this system by substitution.

• (1, -4)

• (1, 4)

• (-4, -7)

• (-7, -4)

What is the solution to this system? Solve by substitution.
y= 4x + 3
2x - 3y = 21

• (3,-9)

• (-3,-9)

• (-3,9)

• (0,1)

solve by substitution: y=3x+14
y=-4x

• y=3

• y=1

• y= - 2

• y=4

Determine if the system has one solution, infinitely many solutions, or no solution.

• One Solution

• Infinitely Many Solutions

• No Solution

• Infinitely Many Solutions
• No Solution

Which is the best method for solving this system of equations?

• Substitution

• Equal Values

• Elimination