Question

If (t+10)+t=t+20, what is the value of t?

Answer 1

t = 10

Explanation:

2t+10 = t+20

-t -t

__________

t + 10 = 20

-10 -10

_________

t = 10

Answer 2

t=10

Explanation:

(t+10)+t=t+20,

Combine like terms

2t+10 = t+20

Subtract t from each side

2t-t+10 =t-t+20

t+10 =20

Subtract 10 from each side

t+10-10 = 20-10

t = 10