Q84: Solve.<br>- <span class="ql-formula" data-value="2.9=19.8-\mathrm{x}"><span class="katex"><span class="katex-mathml"><math
Q85: Solve.<br>-a <span class="ql-formula" data-value="-23=4"><span class="katex"><span
Q86: Solve the equation. Round the solution
Q87: Solve.<br>- <span class="ql-formula" data-value="9.2 \mathrm{x}=73.6"><span class="katex"><span
Q88: Solve.<br>-The "reaction distance" is the distance
Q90: Solve the equation<br>- <span class="ql-formula" data-value="3(5
Q91: Solve.<br>- <span class="ql-formula" data-value="2.8+\mathrm{x}=10"><span class="katex"><span class="katex-mathml"><math
Q92: Solve.<br>-To calculate the speed <span
Q93: Simplify.<br>- <span class="ql-formula" data-value="5 x+6 x"><span
Q94: Solve the equation.<br>- <span class="ql-formula" data-value="\frac{1}{4}