Q39: Solve.<br>- <span class="ql-formula" data-value="-0.9+x=20.0"><span class="katex"><span class="katex-mathml"><math
Q40: Solve the equation. Round the solution
Q41: Simplify.<br>- <span class="ql-formula" data-value="2 y+4 y"><span
Q42: Use an equation to solve the problem.<br>-A
Q43: Solve.<br>- <span class="ql-formula" data-value="-\frac{8}{21} y=-\frac{32}{15}"><span class="katex"><span
Q45: Translate the stated rule or relationship
Q46: Solve the equation<br>- <span class="ql-formula" data-value="46=2(5
Q47: Solve<br>- <span class="ql-formula" data-value="8 x+10 x=126"><span
Q48: Solve<br>- <span class="ql-formula" data-value="2.5 \mathrm{~m}+4=2.2 \mathrm{~m}+16"><span
Q49: Solve the equation.<br>- <span class="ql-formula" data-value="179=15