<p class="ql-block">打包法解方程</p><p class="ql-block">18+(2x-4)÷2=15</p><p class="ql-block">(2x-4)÷2=18-15=3</p><p class="ql-block"><span style="font-size:18px;">(2x-4)=2×3=6</span></p><p class="ql-block"><span style="font-size:18px;">2x=4+6=10</span></p><p class="ql-block"><span style="font-size:18px;">x=10÷2=5</span></p><p class="ql-block"><br></p>