exam Maths Puzzle Numerical Ability

Find the gcf for the group of terms:
-30a^3, 5a^4

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exam Other Question





x+1.2=1.6=5.7
I need to show how I arrive at my answer. I am totally confused. I believe the answer is 2.9 but have to show how to get that answer!!!!
Thank You
Francine


158 greater than or equal to 52s