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3х + 5 - 13x = 25 need

User Janosch
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1 Answer

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\begin{gathered} 3x+5-13x=25 \\ 5-10x=25 \\ \text{Multiply both sides by -1:} \\ 10x-5=-25 \\ \text{add 5 to both sides:} \\ 10x=-20 \\ \text{divide both sides by 10:} \\ x=-(20)/(10) \\ x=-2 \end{gathered}

User Agoston Horvath
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