exam Maths Puzzle Numerical Ability

Hi! I need some help to solve
4(x+5)-8x=-2(x-2)
and
5-x=3(2-x)+2x

Thanks so much for your help

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exam Other Question

A circle has a diameter with endpoints (-8,-1) and (-3,13). Find the center of the cicle. Find the area of the circle. I have a quesiton on how to fine the domain of a compostite funtion f*g

f(x) =x+6, g(x) =4/x+8

i think it is x is not equal to -14