Q277: Simplify.<br>- <span class="ql-formula" data-value="-\frac{1}{12}+\frac{7}{9}-\left(-\frac{1}{3}\right)+\frac{1}{2}"><span class="katex"><span class="katex-mathml"><math
Q278: Subtract.<br>- <span class="ql-formula" data-value="\frac{7}{11}-\frac{14}{11}"><span class="katex"><span class="katex-mathml"><math
Q279: Subtract.<br>- <span class="ql-formula" data-value="-8.1-(-12.1)"><span class="katex"><span class="katex-mathml"><math
Q280: Rewrite the division as a multiplication.<br>-
Q281: Graph the numbers on a number
Q283: Write an equivalent expression. Use an
Q284: Evaluate <span class="ql-formula" data-value="-x"><span class="katex"><span
Q285: Evaluate <span class="ql-formula" data-value="-x"><span class="katex"><span
Q286: State the real number that corresponds
Q287: Evaluate <span class="ql-formula" data-value="-x"><span class="katex"><span