GCSE Maths Practice: simultaneous-equations

Question 8 of 10

Solve simultaneous equations using substitution method.

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\( \begin{array}{l}\text{Solve the simultaneous equations:} \\ 2 \times x + 5 \times y = 20 \quad \text{(1)} \\ x - y = 1 \quad \text{(2)}\end{array} \)

Select all correct options:

\( x = \dfrac{25}{7} \) \( y = \dfrac{18}{7} \) \( x = 5 \) \( y = 4 \)

Check all answers in both original equations.

Substitute one variable into the other equation, solve step by step.