exam Maths Puzzle Numerical Ability

solve the equation

x+7/3 = 37/15 - x-2/5

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exam Other Question

2/9X = 1/7

round to hundredths
What is the linear equation that created this table:
x=-3,-2,-1,0,1, 2, 3
y= 0, 2, 4,6,8,10,12
I am having trouble determining the formula/s to answer these problems.
Thank you