180- 44= 136 = x
90-57=33 = y
107 - 27 = 80 = x
P = 57
18a+15
making a subject of formular
a=18-15
=3
<h2><em>Answer:</em></h2><h2><em>3×7-2×6+3</em></h2><h2 /><h2><em>=21-12+3=24-12</em><em>=</em><em>1</em><em>2</em></h2><h2 />
Answer:
False, they take form of a U shape
