exam Maths Puzzle Numerical Ability

I need help learning fractions and geting them stuck in my memory. I have flunked more than 5 math tests because I forget the meterial.

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exam Other Question

Hello I need help with 4 problems....

1.)Simplify: 15(x-2)+24-10(3x-x^2)

2.)Evaluate: -2x^2-y+3xy "for x=5 and y=-3"

3.) solve for c: -7(2c+5)=3(c-6)

4.) solve foe x: 1
please help me in this problem: The ratio of 4 less than a number to 26 more than that number is 1 to 3. What is the number?