Subtract. a. (21x)-(-16+7x) b. (-13n)-(17-5n) c.(4y-7)-(y-7) d.(-w+0.4)-(-w-0.4)
2 answers:
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Answer:
Step-by-step explanation:
see the attached figure to better understand the problem
we know that
m∠LOM+m∠MON=m∠LON ----> by angle addition postulate
we have
m∠LOM=2x°
m∠MON=x°
m∠LON=90° ----> is a right angle
substitute the values
solve for x
