Some number times 21 is equal to the number increased by -17

Make the number "x"

Product means multiplication, so -17x

A number "increased by" means addition so x+(-21)

These two expressions should be set equal to each other:

-17x=x+(-21)

-17x=x+(-21)

-18x=-21

x=(-21/-18)

x= 7/6

subtract x from both sides divide both sides by -18 simplify

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step-by-step explanation:

by definition, an arc subtended by a central angle of some given measure has the same measure. so .