3ц1/3*2ц2/5(2ц-4ц8/15*3/17

3ц1/3×2ц2/5(2ц-4ц8/15×3/17 2ц2/5(2-4ц8/5×1/7) 2ц2/5(2-4ц8/85) 2ц2/5(2-32/85) 2ц2/5×138/85 2ц276/425 552/425 или 1ц127/425

3 1/3×2 2/5(2-4 8/15×3/17) 3 1/3×2 2/5=10/3×12/5=8 4 8/15×3/17=68/15×3/17=4/5 2-4/5=1 1/5=6/5 8×6/5=48/5=9 3/5 проверь в задании: до скобки умножение?