2(4y + y)
The idea behind the distributive form is to remove a like term from the original and place it on the outside to help with reducing the overall equation. So, to put it back in its original, multiply 2 times 4y (8y), and 2 times y (2y).
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2y+8y = 10y
-5(x + 2y) -3x + 8y + 5 = -5x -10y -3x + 8y + 5 = -8x -2y + 5
9y-3y=6y; 6y+2y=8y; so your answer is 8y
4xy - 2y(x + 4) = 4xy - 2xy - 8y = 2xy - 8y = 2y(x - 4)
If: 8y-2 = 3-2y Then: 8y+2y = 3+2 So: 10y = 5 Therefore: y = 5/10 or as a 1/2 in its simplest form