Question

Help me on this please

Answer 1

y=10

j=8

Explanation:

`3y-7=23`

Collect like terms and simplify

`3y =23+7\\3y=30`

Divide both sides of the equation by 3

`(3y)/(3) = (30)/(3)`

Simplify

`y=10`

2.

`(3(j-1))/(2)=12 + (2-j)/(4) \\\\\mathrm{Multiply\:by\:LCM=}4\\\\(3\left(j-1\right))/(2)*\:4=12*\:4+(2-j)/(4)*\:4\\\\Simplify\\6\left(j-1\right)=-j+50\\\\Expand\:6\left(j-1\right) :6j-6\\\\6j-6=-j+50\\\\\mathrm{Add\:}6\mathrm{\:to\:both\:sides}\\6j-6+6=-j+50+6\\\\Simplify\\6j=-j+56\\\\\mathrm{Add\:}j\mathrm{\:to\:both\:sides}\\6j+j=-j+56+j\\\\Simplify\\7j=56\\\\\mathrm{Divide\:both\:sides\:by\:}7\\(7j)/(7)=(56)/(7)\\\\Simplify\\j=8`

Answer 2

14. y=10

Explanation:

3y-7=23

+7 +7

3y=30

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3 3

y=10