exam
Maths Puzzle
Numerical Ability
1086 cm² / 19 mm² =
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t.21
solve and state the solution for the system by substitution.
x+3y=12
-5-4y=-16
t.22
solve and state the solution for the system by addition
3x+4y=-1
6x-2y=3
given f(x)=4x-5, find f(1)