△STR≅△LMN, SR=7b+8, and LN=11b−12. Find b and SR.

Given:

To find:

The value of b and SR.

Solution:

We have,

                         (Given)

                                 (CPCTC)

Substituting the given values, we get

Divide both sides by -4.

Now,

Therefore, the value of b is 5 and the measure of SR is 43 units.

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10