Answer:
-7x
Step-by-step explanation:
==> -12x + 5x.
==> -12+5xx
==> -7x

number of marks available = 140
percentage secured = 70%
therefore marks secured =

hope helpful~
Half the perimeter is equal to the length plus the width.
326 /2 = 163
Length + width = 163
87 + width = 163
Width = 163 - 87
Width = 76 meters
5,040 I think because 7•6•5•4•3•2•1=5040