Photo attached, please answer with work
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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
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