To solve for x, we can combine the equations:490 - x = 100200 + x = 280 + 600
First, solve the first equation for x:x = 490 - 100x = 390
Next, substitute the value of x into the second equation:200 + 390 = 280 + 600590 = 880
Therefore, the solution is not valid as 590 does not equal 880.
To solve for x, we can combine the equations:
490 - x = 100
200 + x = 280 + 600
First, solve the first equation for x:
x = 490 - 100
x = 390
Next, substitute the value of x into the second equation:
200 + 390 = 280 + 600
590 = 880
Therefore, the solution is not valid as 590 does not equal 880.