exam Maths Puzzle Numerical Ability

this is from a work sheet. I need to know how to work this problem.

3x/4 + 1 = 10

Thanks

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Please help me solve this problem
Subtract
y/y^2+19+90 - 9/y^2+17y+72 graph linear equation y=3x-4
y=-3x-4

(show step by step to i can understand im having trouble graphing linear equations please help)