The expression is: 2y -20
Twice the sum of 'x' and 'y' . . . 2(x+y) The sum of twice 'x' and 'y' . . . (2x+y)
When 25 is decreased by 20% the result 20.
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2(x+y)=2x+2y
(2)x=Y-4
To express a number decreased by twice another number, you can use algebraic notation. Let’s say the first number is represented by ( x ) and the second number by ( y ). The expression would be written as ( x - 2y ), indicating that you take ( x ) and subtract twice the value of ( y ).
The sum of x and y decreased by their product is (x + y)- xy.
The expression is: 2y -20
Twice the sum of 'x' and 'y' . . . 2(x+y) The sum of twice 'x' and 'y' . . . (2x+y)
x+y=20 x=2y-2 2y-2+y=20 y-2=20 y=18 x=2
y-8
2(x+y) is twice the sum of x and y, and 2x+y is the sum of twice x and y
320 decreased by -20 = 300
The difference between 72 and 16
When 25 is decreased by 20% the result 20.
y-6
450 decreased 20% results in: 360