Question 4
Given $2x_1+x_2+x_3+x_4=5$, $x_1+2x_2+x_3+x_4=10$, $x_1+x_2+2x_3+x_4=20$, $x_1+x_2+x_3+2x_4=40$, find $155x_3+49x_4$.
SEAMO X 2023 — Paper D — Grade 7–8 Question 4
SEAMO · SEAMO X 2023 — Paper D — Grade 7–8
SEAMO · SEAMO X 2023 — Paper D — Grade 7–8