exam Maths Puzzle Numerical Ability

How do I solve -4/5(x+2)=4 ?
can you show me each step?

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exam Other Question

x:3x::6x:7 my math teacher says that the columne of a cubic centimeter is the same as the columne of a cubic millimeter, and the same as the volumne of a cubic inch. How is this possible? Thank You. Paula