Explicación paso a paso:
[tex]- \frac{ 1 }{ 2 } x+0.2 \times \sqrt{ 9 } =-0.8[/tex]
[tex]-\frac{1}{2}x+0.2\times 3=-0.8 [/tex]
[tex]-\frac{1}{2}x+0.6=-0.8 [/tex]
[tex]-\frac{1}{2}x=-0.8-0.6 [/tex]
[tex]-\frac{1}{2}x=-1.4 [/tex]
[tex]x=-1.4\left(-2\right) [/tex]
[tex]x=2.8 [/tex]
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Explicación paso a paso:
[tex]- \frac{ 1 }{ 2 } x+0.2 \times \sqrt{ 9 } =-0.8[/tex]
[tex]-\frac{1}{2}x+0.2\times 3=-0.8 [/tex]
[tex]-\frac{1}{2}x+0.6=-0.8 [/tex]
[tex]-\frac{1}{2}x=-0.8-0.6 [/tex]
[tex]-\frac{1}{2}x=-1.4 [/tex]
[tex]x=-1.4\left(-2\right) [/tex]
[tex]x=2.8 [/tex]