exam Maths Puzzle Numerical Ability

what is 6(c-1)<-18

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exam Other Question

The Bookholder Company manufacturers two types of bookcases out of oak and walnut. Model 01 requires 5 board feet of oak and 2 board feet of walnut. Model 02 requires 4 board feet please help me solve this equation: if 3x-1=11, what is the value of 2x+x?
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