exam Maths Puzzle Numerical Ability

Hi,
how can I solve problems that have variables in both sides?

for example 25y/36 = 33/2y

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exam Other Question

The following augmented matrix represents the system of what equstions:

1/3/2/4
2/-1/5/-2
-3/1/6/1
Find 3 consecutive odd integers whose sum is 303. What is the value of the 3rd odd integer?


303)