using appropriate properties find...
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2). 2/3× -3/7-1/6×3/2+1/14×2/5
2/1×. -1/7-1/6×1/2+1/7×1/5
420×-30-36×105+30×42/210
-12600-3780+1260/210
17640/210. ans
1). -2/3×3/5+5)2-3/5×1/6
-2)3×. 1/5+5/2-1/5×1/2
-20×6+75-6×15/30
-120+75-6×15)30
-45-6×15/30
4050/30
405/3
135ans
2/1×. -1/7-1/6×1/2+1/7×1/5
420×-30-36×105+30×42/210
-12600-3780+1260/210
17640/210. ans
1). -2/3×3/5+5)2-3/5×1/6
-2)3×. 1/5+5/2-1/5×1/2
-20×6+75-6×15/30
-120+75-6×15)30
-45-6×15/30
4050/30
405/3
135ans
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