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Maths Exercices
Variable expressions
Evaluate multi-variable expressions

Evaluate the expression 2k+ w for k = -3 and w = -1.

Plug in k = -3 and w= -1, then simplify.

2k+w  
2(-3)+(-1)   Plug in k=-3 and w=-1
-6-1   Multiply
-7   Add

Evaluate the expression ac-9 for a=6 and c=-6
Solution: ac-9=