Question

Solve using cross multiplication method:
$x + 20y = 1000 \\ x + 26y = 1180$
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Answer 1

Solve using cross multiplication method:

\begin{gathered}x + 20y = 1000 \\ x + 26y = 1180\end{gathered}

x+20y=1000

x+26y=1180

cut both the x and then subtract 20y and 26 y

6y = 180

= 30