Look at 2%2Ax%2B9=highlight_red%28+25+%29. Moved these terms to the left highlight_green%28+-25+%29 It becomes 2%2Ax%2B9-highlight_green%28+25+%29=0. Look at 2%2Ax%2Bhighlight_red%28+9+%29-highlight_red%28+25+%29=0. Added fractions or integers together It becomes 2%2Ax%2Bhighlight_green%28+-16+%29=0. Look at 2%2Ax%2Bhighlight_red%28+-16+%29=0. Removed extra sign in front of -16 It becomes 2%2Ax-highlight_green%28+16+%29=0. Look at highlight_red%28+2%2Ax-16+%29=0. Solved linear equation highlight_red%28+2%2Ax-16=0+%29 equivalent to 2*x-16 =0 It becomes highlight_green%28+0+%29=0. Result: 0=0 This is an equation! Solutions: x=8.
