1. Since <span>5x</span><span> contains the </span>variable<span> to solve for, move it to the left-hand side of the </span>equation<span> by subtracting </span><span>5x</span><span> from both sides. </span><span>3x−7−5x=13
</span>Add <span>3x</span><span> and </span><span>−5x</span><span> to get </span><span><span>−2x</span>. </span><span>−2x−7=13
Move -7 to the right hand side of the equation. </span><span>−2x=7+13
</span>Add 7<span> and </span>13<span> to get </span><span>20. </span><span>−2x=20
</span>Divide<span> each </span>term<span> in the </span>equation<span> by </span><span><span>−2</span>.
</span><span>x=−10 </span> 2. Since <span>5x</span><span> contains the </span>variable<span> to solve for, move it to the left-hand side of the </span>equation<span> by subtracting </span><span>5x</span><span> from both sides. </span><span>7−3x−5x=13
</span>Add <span>−3x</span><span> and </span><span>−5x</span><span> to get </span><span><span>−8x</span>. </span><span>7−8x=13
Move 7 to the right hand side of the equation. </span><span>−8x=−7+13
</span>Add <span>−7</span><span> and </span>13<span> to get </span><span>6. </span><span>−8x=6
</span>Divide<span> each </span>term<span> in the </span>equation<span> by </span><span><span>−8</span>.
