5x3 = 320 x3 = 320/5 = 64 So x = cuberoot(64) = 4
y = 5x3 + 5 is a cubic equation. You cannot solve for x (or y), because there are two variables and only one equation. If you graph this, however, you will see a curve that passes through all possible points that make this equality true.
Easy! if -a = -4 then a = 4!!
(5x800)+(5x20)+(5x3)=4000+100+15=4115
5x3=4 2x8=2 6x3=3 1x7=7/40
The generalisation is that multiplication is Abelian (or commutative) for numbers.
y=x+4
If you're asking what x equals, it equals 5 because 5x3=15, and 15-2=13.
-5
you cant unless you know what the value of P equals
2y = 4 (divide both sides by 2 to solve) y = 2
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