Step 1: Simplify the equations:
Step 2: Solve each equation separately.
222 - (360/y + 43) = 99222 - 360/y - 43 = 99
8000 / (28x + 4) - 15 = 258000 / (28x + 4) = 25 + 158000 / (28x + 4) = 4028x + 4 = 8000 / 4028x + 4 = 20028x = 196x = 196 / 28x = 7
(410 - x) / 7 + 70 = 120(410 - 7) / 7 + 70 = 120403 / 7 + 70 = 12057.57 + 70 = 120127.57 = 120
Therefore, x = 7, y = 4.5, and the third equation does not have a solution.
Step 1: Simplify the equations:
222 - (360/y + 43) = 998000 / (28x + 4) - 15 = 25(410 - x) / 7 + 70 = 120Step 2: Solve each equation separately.
222 - (360/y + 43) = 99
360/y = 99 - 222 + 43360/y = -80222 - 360/y - 43 = 99
y = 360/80
y = 4.5
8000 / (28x + 4) - 15 = 25
8000 / (28x + 4) = 25 + 15
8000 / (28x + 4) = 40
28x + 4 = 8000 / 40
28x + 4 = 200
28x = 196
x = 196 / 28
x = 7
(410 - x) / 7 + 70 = 120
(410 - 7) / 7 + 70 = 120
403 / 7 + 70 = 120
57.57 + 70 = 120
127.57 = 120
Therefore, x = 7, y = 4.5, and the third equation does not have a solution.