How do you solve 10=3( r + 1) + 1?

2 Answers
Jan 16, 2018

r=2

Explanation:

10=3(r+1)+1
10=3r+3+1
10=3r+4 // -4,

6=3r //:3,

rArrr=2

If you need more explanation feel free to ask :)

Jan 16, 2018

r = 2

Explanation:

10 = 3(r+1)+1

subtract 1:

9 = 3(r+1)

divide by 3:

3 = r+1

r+1 = 3

subtract 1:

r = 2

alternatively:

expand brackets:
10 = 3r + 3 + 1

collect like terms:

10 = 3r+4

subtract 4:

3r = 6

divide by 3:

r = 2