2x + 3y = 630 x + y = 245 then you want to get rid of x so in the second equation × by -2 and get -2x -2y =-490 subtract this equation from the first to get y=$140 substitute 140 in for y and get x= $105 and 2x=210 and 3y=420 210 +420=630
Step-by-step explanation: 1 to the fifth power is 1 so 1 times 3 is 3. Then 19 - 15 is 4. So you have 4/3 which can stay as 4/3 or you can divide 4 by 3 and get 1.3