exam Maths Puzzle Numerical Ability

Value of 3 + 4x when x=2

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exam Other Question

Can someone help me on this?

Is -4 a solution to the equation: 7x -5 + 3x = 6 + x - 10

Thanks,
Asley
Evaluate.
Find (f+g)(-3) given f(x)=x-4 and g(x)=x-6