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Solve the problem.
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Q6: <span class="ql-formula" data-value="- 9 x ^ {
Q12: 1.5x + 4.3 = 0.7x + 2.54<br>A)x
Q16: If <span class="ql-formula" data-value="f (
Q21: 0.8x - 0.4(20 + x)= 0.40(20)<br>A)x =
Q27: <span class="ql-formula" data-value="18 x ^ { 2
Q42: <span class="ql-formula" data-value="\begin{array} { l } x
Q43: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6914/.jpg" alt=" A)
Q44: <span class="ql-formula" data-value="\sqrt { \sqrt [ 9
Q50: <span class="ql-formula" data-value="( - 9,19 )"><span class="katex"><span
Q89: <span class="ql-formula" data-value="4 x ^ { 2