Question

1,5x-9y-(y+1,5x), если x=0,781,y=0,9

Answer 1

1,5x-9y-y-1,5x= -10y

-10*0,9= -9

Answer 2

To evaluate the expression 1.5x - 9y - (y + 1.5x) with the given values x = 0.781 and y = 0.9, we can substitute these values into the expression and simplify it:

1.5(0.781) - 9(0.9) - (0.9 + 1.5(0.781))

= 1.1715 - 8.1 - (0.9 + 1.1715)

= 1.1715 - 8.1 - 0.9 - 1.1715

= -8.9285

Therefore, when x = 0.781 and y = 0.9, the expression 1.5x - 9y - (y + 1.5x) evaluates to -8.9285.