3 years ago

X+78=3x-2 ..................

Mathematics

1 answer:

photoshop1234 [79]3 years ago

6 0

Answer:

$x=40$

Step-by-step explanation:

$x+78=3x-2\\\mathrm{Subtract\:}78\mathrm{\:from\:both\:sides}\\x+78-78=3x-2-78\\x=3x-80\\\mathrm{Subtract\:}3x\mathrm{\:from\:both\:sides}\\x-3x=3x-80-3x\\\\$

$-2x=-80\\\frac{-2x}{-2}=\frac{-80}{-2}\\x=40$

You might be interested in

What is the average rate of change of the function from X=2 to x=4

RideAnS [48]

Answer:

I have no results if I get some I will notify you

Step-by-step explanation:

I hope that help's

4 0

2 years ago

At oceanside middle school 110 students tried out for the football team only 80% of the students that tryout make the team how m

Olenka [21]

Step-by-step explanation:

answer is 22 students in the team

how do u get it? 

you know it is 80% of the students went for try out so you do 100% - 80% give you 20% students the number of students in the team already. so you do 20 / 100 x 110 students which already in the whole school over 1 which would give it 22