Question
$$29+0.5x = 28+0.7x$$
Answer
This equation has no solution.
Explanation
$$ \begin{aligned} 29+0.5x &= 28+0.7x&& \text{simplify left and right hand side} \\[1 em]29+0x &= 28+0x&& \\[1 em]29 &= 28&& \\[1 em] \end{aligned} $$
Since the statement $ \color{red}{ 29 = 28 } $ is FALSE, we conclude that the equation has no solution.
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