2/9 multiplied 2/5 + 2/9 multiplied 3/5 -11/18
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2/9× 2/5=4/45
Then 3/5-11/18
Lcm of 5 and 18=90
3/5=3×18/5×18=54/90
11/18=11×5/18×5=55/90.
54/90-55/90=-1/90
2/9× -1/90=-2/810
4/45+ -2/810
lcm of 45 and 810=810
4×18/45×18=72/810
-2/810=-2×1/810×1=-1/820
2/9+-1/210
lcm=630
2/9=2×70/9×70=140/630
-1/210=-1×3/210×3=-3/630
140/630+-3/630
140/630-3/630
137/630 is the answer.
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