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SOLVE SIMULTANEOUS EQUATIONS BY
SUBSTITUTION
SKILLS QUESTIONS
Solve these pairs of simultaneous equations by substitution.
Remember to find both x and y.
Q1. x = 8 – 2y
2x + 3y = 13
Q2. y = 4 = x
5x – 3y = 0
Q3. 3x – 2y = 8
x= 3y + 12
Q4. y = 5x
7x – 2y = 3
Q5. y = 7 – 2x
x + 2y = 8
Q6. y = 5x + 7
y = 2x + 1
Q7. y = 4x – 12
3x – 5y = 26
Q8. x = - 2 – 3y
3x – 2y = - 17
Q9. x = 2y – 1
x = 3y - 6
Q10. y = 4x – 2
8x + y = - 5
Mathematics is
the art of giving
the same name to
different things.
Henri Poincare
