exam Maths Puzzle Numerical Ability

problem 7 i need help on thank you ..

x/6 + 3 = 9

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exam Other Question

use elimination to solve each system of equations

One number added to twice another number is 23. Four times the first number added to twice the other number is 38. What are the numbers? If the value of x and y in the following fraction are both tripled, how does the value of the fraction change?
XZ
Y