Question

Спостіть вираз:5×+6у+9×+12у

(5×-6у)+(3×+4у)

(9×-7у)-(5×-9у)

5(2×-4у)-6(3×-7у)

Answer 1

Ответ:

5x + 6y + 9x + 12y = 14x + 18y

(5x - 6y) + (3x + 4y) = 8x - 2y

(9x - 7y) - (5x - 9y) = 4x + 2y

5(2x - 4y) - 6(3x - 7y) = 10x - 20y - 18x + 42y = -8x + 22y