exam Maths Puzzle Numerical Ability

Here is my problem: Twice what number is equal to three times that number? Thank you Lisa

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exam Other Question

step by step how would u do a problem like 1/2y-2/3=7/8 i have been given this problem in my homework

1.866^(x-2)=1/1.244^(4.x)

any help with it would be greatly used
many thanks x