5×|-2-7|-3×5=5|-9|-15=5×9-15=45-15=30
5 lx - 7l - 3y; x = -2; y = 5
5 * l-2 - 7l - 3 * 5 = 5 * l-9l - 15 = 5 * 9 - 15 = 45 - 15 = 30
5×|-2-7|-3×5=5|-9|-15=5×9-15=45-15=30
5 lx - 7l - 3y; x = -2; y = 5
5 * l-2 - 7l - 3 * 5 = 5 * l-9l - 15 = 5 * 9 - 15 = 45 - 15 = 30