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3 years ago

Given: -8(x+1)=-5(x+10) prove x=14

Mathematics

2 answers:

Doss [256]3 years ago

5 0

Answer:

isolate the variable by dividing each side by factors that dont contain the variable

Step-by-step explanation:

prohojiy [21]3 years ago

5 0

-8(x+1)=-5(x+10)

-8x-8=-5x-50

+50 +50

-8x+42=-5x

+8x +8x

42=3x

/3 /3

14=x

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likoan [24]

For part A, lets write the problem

$-np - 70\ \textless \ 40$

add $70$ to both sides

$-np - 70 + 70 \ \textless \ 40 + 70

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we are going to reverse the inequality, to do this we are going to multiply both sides by $-1$

$(-np ) ( -1 ) \ \textgreater \ 110 ( -1 )$

$pn \ \textgreater \ -110$

divide both sides by $p$

$\frac{pn}{p} \ \textgreater \ \frac{-110}{p}$

our answer would be

$n \ \textgreater \ \frac{-110}{p}$

lets go with part b, lets write the problem

$4w - 7k = 28$

subtract $4w$ from both sides

$4w - 7k - 4w = 28 - 4w$

$-7k = 28 - 4w$

divide both sides by $-7$

$\frac{-7k}{-7} = \frac{28}{-7} - \frac{4w}{-7}$

I few simplified it, we would be left with,

$k = -\frac{28 - 4w }{7}$

I hope this helped!!

- Kiana

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