$$ \begin{aligned} -4(x+1)-10 &= 15+7&& \text{simplify left and right hand side} \\[1 em]-(4x+4)-10 &= 22&& \\[1 em]-4x-4-10 &= 22&& \\[1 em]-4x-14 &= 22&& \text{ move -14 to the right } \\[1 em]-4x &= 22+14&& \\[1 em]-4x &= 36&& \text{ divide both sides by $ -4 $ } \\[1 em]x &= -\frac{36}{4}&& \\[1 em]x &= -9&& \\[1 em] \end{aligned} $$
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