Lunch at Sylvia's Restaurant Josephine and her two friends went out for lunch. The receipt shown below lists the lunch total before tax and tip. Sylvia's Restaurant 323 Watcolm X BND New York, NY 10027 BBQ BURGER W/CHEESE CHICKEN FINGER BASKE MUSHROOM BURGER CHILI CHEESE FRIES 9.99 8.99 10.99 8.99 TOTAL $38.96 Sylvia's PARTA Josephine and her two friends are performers at the Cotton Club and the restaurant offers them a 10% off on their meal. What is the total cost of the bill including the discount?​

Ok here we go ..there are plenty of ways to solve such math problems but we will go for the smartest and easiest ..5x+2y=7  -2x+6y=9we rearrange them into the following ..by multiplying the 1st equation by 2 it becomes 10x + 4y = 14we rearrange it and so it becomes 10x = 14 - 4yas for the second equation we multiply it by 5 and rearrange it so it becomes as to the following ..-10x + 30y = 45rearranging so 10x = 30y -45now 10x equals both 14 - 4y and 30y -45so   14 - 4y = 30y -4531 = 26yy= 31/26 = 1.19 or around 1.2so by now we can calculate x easily as  -2x+6y=9so 2x = 6y -9 = 6 * 31/26 - 9 = -1.84  then x = - 0.92 or around -0.9best luck!