Question

Photo attached, please answer with work

Answer 1

Step-by-step explanation:

(8x+12)

sum of straight line =180

8x+12=180

8x=180-12

8x=168

x=168/8

x=21

check

=8(21)+12

=168+12

=180

(10x-15)

sum of straight line=180

10x-15=180

10x=180+15

10x=195

x=195/10

x=19.5

check

=10(19.5)-15

=195-15

=180