Given:ST=3x+3 TU=2x+9.

a. what is the value of ST?

b. What is the value of TU?

If ST=3x+3 and TU=2x+9

it can be solved if ST = TU

then solve first solve for the value of x

ST = TU

3x + 3 = 2x + 9

3x - 2x = 9 - 3

x = 6

now putting the value of x, we can find the value of ST and TU

ST = 3x + 3

= 3 (6) + 3

= 18 + 3

ST = 21

TU = 2x + 9

= 2 (6) + 9

= 12 + 9

TU = 21

the value of ST is 21 and TU is 21 as both are equal