using substitution

June 2017 P1 Q5

create first, then substitute

June 2017 P1 Q9

entry prices - 2 families

Summer 2019 P2 Q15

Create simultaneous eqns & solve

Nov 2016 P1 Q15

adult and child prices

Sample 2 P2 Q15

Form 2 equations and solve

Sample 1 P2_Q15

Solve simultaneous eqns

Nov 2019 P2 Q15

2 linear diff coefficients

Nov 2017 P1 Q16

2 linear equations

June 2017 P1 Q17

create equations & solve

Summer 2018 P2 Q18