5x + 2.8(480-x) = 2.68(480
It's supposed to say
2.5x + 2.8(480-x) = 2.68(480
again ...
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To solve the equation 5x + 2.8(480 - x) = 2.68(480), we can follow these steps:
Step 1: Distribute the 2.8 and 2.68 to the terms inside the parentheses:
5x + 2.8 * 480 - 2.8x = 2.68 * 480
Step 2: Simplify both sides of the equation:
5x + 1344 - 2.8x = 1286.4
Step 3: Combine the x terms on the left side:
5x - 2.8x + 1344 = 1286.4
(5x - 2.8x) + 1344 = 1286.4
2.2x + 1344 = 1286.4
Step 4: Isolate the x term by subtracting 1344 from both sides:
2.2x + 1344 - 1344 = 1286.4 - 1344
2.2x = -57.6
Step 5: Solve for x by dividing both sides by 2.2:
2.2x / 2.2 = -57.6 / 2.2
x = -26.18
Therefore, the solution to the equation 5x + 2.8(480 - x) = 2.68(480) is x = -26.18.