Question 107533
#1




{{{-3u-(5u+7)=-2}}} Start with the given equation




{{{-3u-5u-7=-2}}} Distribute the negative



{{{-8u-7=-2}}} Combine like terms on the left side



{{{-8u=-2+7}}}Add 7 to both sides



{{{-8u=5}}} Combine like terms on the right side



{{{u=(5)/(-8)}}} Divide both sides by -8 to isolate u




{{{u=-5/8}}} Reduce


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Answer:

So our answer is {{{u=-5/8}}}  (which is approximately {{{u=-0.625}}} in decimal form)


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#2



{{{-(8d-7)-63=0}}} Start with the given equation




{{{-8d+7-63=0}}} Distribute the negative



{{{-8d-56=0}}} Combine like terms on the left side



{{{-8d=0+56}}}Add 56 to both sides



{{{-8d=56}}} Combine like terms on the right side



{{{d=(56)/(-8)}}} Divide both sides by -8 to isolate d




{{{d=-7}}} Divide


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Answer:

So our answer is {{{d=-7}}}