Good evening
-1/2 x + 3 = -x + 7
Let's start solving this by subtracting x from both sides
-1/2 x + 3 - x = -x + 7 - x
-3/2 x + 3 = 7
Now again subtract 3 from both sides
-3/2 x + 3-3 = 7-3
-3/2 x = 4
Now multiply both sides by 2/-3
-3/2 x * 2/-3 = 4*2/-3
-6/-6 x = -8/3
x = -8/3
If you want to check if the answer is good just replace -8/3 everywhere you see x
So let's do it together :)
Replace -8/3 everywhere we find x
-1/2 (-8/3) + 3 = (-8/3) + 7
8/6 + 3 = ( -8+ 21 )/3
4/3 + 3 = 13/3
( 4+9)/3 = 13/3
13/3 = 13/3
So the answer is good
x= -8/3
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