Answer:
[tex]s=-1[/tex]
Step-by-step explanation:
[tex]7=-10s-3[/tex]
[tex]-10s-3=7[/tex]
Add 3 to both sides:
[tex]-10s-3+3=7+3[/tex]
[tex]-10s=10[/tex]
Divide both sides by -10:
[tex]\frac{-10s}{-10}=\frac{10}{-10}[/tex]
[tex]s=-1[/tex]
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