Question

20-13×86÷45+64÷55+0+90-61÷57×43​

Answer 1

$\bf\ \: 20 -13 \times 86 \div 45 + 64 \div 55 + 0 + 90 - 61 \div 57 \times 43 \\ \\ \bf\ \bigstar 1)20 - 13 \times 86 = 7 \times 86 = 602 \\ \\ \bf\ \bigstar 2)45 + 64 =10 9 \\ \\ \bf\ \bigstar 3)55 + 0 + 90 - 61 = 145 - 61 = 84 \\ \\ \bf\ \bigstar 4)57 \times 43 = 2451 \\ \\ \bf\boxed{ \bigstar 602 \div 109 \div 84 \div 2451}$

$\huge\ \frac{5.53}{0.35} = 15.8$

Answer 2

Answer:

20−13×86÷45+64÷55+0+90−61÷57×43

★1)20−13×86=7×86=602

★2)45+64=109

★3)55+0+90−61=145−61=84

★4)57×43=2451

★602÷109÷84÷2451