Solve linear and non-linear systems by substitution, keep your ordered pairs matched, and handle the exponent-law questions that look harder than they are.
By the end, you can
solve a simultaneous system by substitution and present the solutions as correctly paired values.
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Simultaneous Equations and Algebraic Substitution
Two unknowns, two equations
One equation with two unknowns has endless solutions. Two equations pin them down, because the answer must satisfy both at once. ➗
In Grade 12 one of the two is usually not linear, which rules out simply adding the equations. Substitution is the method that always works, and it is worth doing the same way every time.
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Next on the Mathematics P1 path · step 11 of 11
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Simultaneous Equations and Algebraic Substitution
R19 · 13 min · certificate
