book Maths Puzzle Numerical Ability

Solve: (4w-28)+(11w+13)=180

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book Other Question

what is 8 sqrt3-5 sqrt3 SUPPOSE EACH ORDER PAIRS ARE FOR THE SAME DIRECT VARIATION. FIND EACH MISSING VALUE.
A. (-1,2)AND (4,Y)
B. (X,-4) AND (-9,-12)