Answer :
[tex]-0.4a+3=7[/tex]
Solve for a:
Subtract 3 from both sides:
[tex]\begin{gathered} -0.4a+3-3=7-3 \\ -0.4a=4 \end{gathered}[/tex]Divide both sides by -0.4:
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Solve for a:
Subtract 3 from both sides:
[tex]\begin{gathered} -0.4a+3-3=7-3 \\ -0.4a=4 \end{gathered}[/tex]Divide both sides by -0.4:
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