book Maths Puzzle Numerical Ability

How do you simplify an expression such as 3.6 + (-1.7)

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1.9........jus subract
9 years agoHelpfull: Yes(0) No(0)

book Other Question

Hi, please help!

I am trying to solve the system of linear inequalities by graphing, however, I cannot locate an example on this problem:

x + 2y is less than or equal to 3
2 -18x=-45