4/9 is equal to 4:9 the ratio.
4/7 = 0.57145/9 = 0.5555so 4/7 is not equal to 5/9
4+4+(4/4)=9 silly but simple as that.
4.9 is equal to four and nine tenths, or 4 9/10
99 + 9/9
4 9/9
It is: (-4)^2 +(-4) -9 = 3 when x is equal to -4
2.25
9
-4-(-9)+(-5) = -4+9-5 = 0
Because multiplication is commutative.
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