220k views
10 votes
Help me on this please

Help me on this please-example-1
User Hercynium
by
8.7k points

2 Answers

11 votes

Answer:

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

User Diogo Moreira
by
8.8k points
1 vote

Answer:

14. y=10

Explanation:

3y-7=23

+7 +7

3y=30

---- -----

3 3

y=10

User Jkucharovic
by
8.9k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories