book Maths Puzzle Numerical Ability

Good morning, Please help me with this problem.

If y = -38 and y = 24 + 8x, what is the value of x?

Thank you.

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book Other Question

solve the following equations for x and y.

1.x+y=25
y=4x

2.x=y+8
2x+y=52

5. 3x+y=33
x=y-13

7.x-y=-10
3x=y+18
What is the sum of series
111^2,112^2,113^3,....118^2,119^2