Q299: Calculate.<br>- <span class="ql-formula" data-value="27+12 \times 12+5"><span
Q300: Substitute to find the value of
Q301: Evaluate.<br>- <span class="ql-formula" data-value="\frac{6 x+3 y}{9}"><span
Q302: Perform the indicated operation and, if
Q303: Subtract.<br>- <span class="ql-formula" data-value="\frac{1}{3}-\frac{5}{9}"><span class="katex"><span class="katex-mathml"><math
Q305: Simplify.<br>- <span class="ql-formula" data-value="\frac{-200 y}{175 y}"><span
Q306: Multiply.<br>- <span class="ql-formula" data-value="\frac{5}{6} \cdot \frac{5}{7}"><span
Q307: Subtract.<br>- <span class="ql-formula" data-value="-\frac{3}{4}-\left(-\frac{9}{7}\right)"><span class="katex"><span class="katex-mathml"><math
Q308: Solve the problem.<br>-Bob's rent is
Q309: Simplify.<br>- <span class="ql-formula" data-value="6(-21)+2(-9)"><span class="katex"><span class="katex-mathml"><math