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-21(2a-21)+24(24-3a)-29=30(a+30)-22(-3a-22)
We simplify the equation to the form, which is simple to understand
-21(2a-21)+24(24-3a)-29=30(a+30)-22(-3a-22)
Reorder the terms in parentheses
+(-42a+441)+24*(24-3a)-29=30*(a+30)-22*(-3a-22)
Remove unnecessary parentheses
-42a+441+24+*(+24-3a+)-29=+30+*(+a+30+)-22+*(-3a-22+)
Reorder the terms in parentheses
-42a+441+(+576-72a)-29=30*(a+30)-22*(-3a-22)
Remove unnecessary parentheses
-42a+441+576-72a-29=+30+*(+a+30+)-22+*(-3a-22+)
Reorder the terms in parentheses
-42a+441+576-72a-29=+(+30a+900)-22*(-3a-22)
Remove unnecessary parentheses
-42a+441+576-72a-29=+30a+900-22+*(-3a-22+)
Reorder the terms in parentheses
-42a+441+576-72a-29=+30a+900+(+66a+484)
Remove unnecessary parentheses
-42a+441+576-72a-29=+30a+900+66a+484
We move all terms containing a to the left and all other terms to the right.
-42a-72a-30a-66a=+900+484-441-576+29
We simplify left and right side of the equation.
-210a=+396
We divide both sides of the equation by -210 to get a.
a=-1.88571428571
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