You can solve 3 equations having 3 variables. Here are the 3 equation examples: x+2y+z=10. 2xy+3z=5. 2x3y5z=27. The goal is to reduce to 2 equations having 2 variables. Multiply bottom equation by (1). Rewrite 2nd and 3rd equation. 2xy+3z=5. Add 2x+3y+5z+27. Equals 2y+8z=32. Go back to original equations and multiply by (2). Then you have 2x 42z=20. plus 2x y +3z. When you add these 2 equations, the answer is 5y +z = 25. You have now reduced the equations from 3 equations down to 2 equations having 2 variables.
 Hot
 Latest

How To: Remember "greater than" & "less than" symbols

How To: Use ">" (greater than) and "<" (less than) symbols

How To: Find the slope of a line given 2 points with fractions

How To: Calculate Faster Than a Calculator

How To: Convert between diameter and radius

How To: Prove the log a + log b = log ab logarithm property

How To: Find the Percent Given Two Numbers

How To: Do long division without a calculator

How To: Calculate percent composition for chemistry

How To: Find a number given Its percent

How To: Find the formula of a piecewise function given a graph

How To: Find and sketch the domain of a multivariable function

How To: Find the equation of a line given 1 point

How To: Solve word problems involving domain and range

How To: Use derivatives to find slope in calculus

How To: Convert temperature using y = mx + b

How To: Use the upsidedown birthday cake method to find a GCF

How To: Graph an inequality on a number line in Algebra

How To: Find a percent of a number

How To: Figure out the domain & range of a piecewise function

How To: Remember "greater than" & "less than" symbols

How To: Use ">" (greater than) and "<" (less than) symbols

How To: Find the slope of a line given 2 points with fractions

How To: Calculate Faster Than a Calculator

How To: Convert between diameter and radius

How To: Prove the log a + log b = log ab logarithm property

How To: Find the Percent Given Two Numbers

How To: Do long division without a calculator

How To: Calculate percent composition for chemistry

How To: Find a number given Its percent

How To: Find the formula of a piecewise function given a graph

How To: Find and sketch the domain of a multivariable function

How To: Find the equation of a line given 1 point

How To: Solve word problems involving domain and range

How To: Use derivatives to find slope in calculus

How To: Convert temperature using y = mx + b

How To: Use the upsidedown birthday cake method to find a GCF

How To: Graph an inequality on a number line in Algebra

How To: Find a percent of a number

How To: Figure out the domain & range of a piecewise function
Be the First to Comment
Share Your Thoughts