## Using substitution to solve simultaneous equations Examples

We can substitute values into formulae to help us work out many different things. Examples range from the formula for the area of a triangle: A = 1 2bh A = 1 2 b h. to the formula for calculating BMI: BM I = w h2 B M I = w h 2.
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Mathematics is the study of numbers, shapes, and patterns. It is used to solve problems in a variety of fields, including science, engineering, and business.

## Substitution

Systems of equations with substitution: potato chips Systems of equations with substitution: -3x-4y=-2 & y=2x-5 Practice: Systems of equations with substitution

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## Substitution method review (systems of equations)

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