To solve for x, we can combine the equations490 - x = 10200 + x = 280 + 600
First, solve the first equation for xx = 490 - 10x = 390
Next, substitute the value of x into the second equation200 + 390 = 280 + 60590 = 880
Therefore, the solution is not valid as 590 does not equal 880.
To solve for x, we can combine the equations
490 - x = 10
200 + x = 280 + 600
First, solve the first equation for x
x = 490 - 10
x = 390
Next, substitute the value of x into the second equation
200 + 390 = 280 + 60
590 = 880
Therefore, the solution is not valid as 590 does not equal 880.