3.7х-(2.8у-1.9х)+5.6у= 5.6x + 2.8y
8.6n - 3.4m-(2.4n-3.4m)= 6.2n
3,7х - (2,8у - 1,9х) + 5,6у = 3,7х - 2,8у + 1,9х + 5,6у = 5,6x +2,8y
8,6n - 3,4m - (2,4n - 3,4m) = 8,6n - 3,4m - 2,4n + 3,4m = 6,2n
3.7х-(2.8у-1.9х)+5.6у= 5.6x + 2.8y
8.6n - 3.4m-(2.4n-3.4m)= 6.2n
3,7х - (2,8у - 1,9х) + 5,6у = 3,7х - 2,8у + 1,9х + 5,6у = 5,6x +2,8y
8,6n - 3,4m - (2,4n - 3,4m) = 8,6n - 3,4m - 2,4n + 3,4m = 6,2n