12c^2/12d * 28d^2/33c^2
-21+ $\frac{11}{12}$a=45
-5-(4-2x) reduire l'expression
if a^2 + b^2, show that log(a+b)/2=(loga+logb)/2.
30b^8/2c^12 times 4c^7/15b^4
602998
2409244
2010095
585130
4818488
4020190
21697546
24214226
6120894
9037838
8536941
8104300
2998
12⁷÷7¹⁵
57= $\frac{5}{8}$z+7
13 + (x-6)
10 10/12-3 8/12 =
