Question

(3,618:1,8-2,1)*5/9:0,02

Answer 1

$(3.618 div 1.8 - 2.1) times frac{5}{9} div 0.02 = - 2.5\ \ 1) : : : 3.618 div 1.8 = frac{3618}{1800} = frac{201}{100} = 2.01 \ 2) : : : 2.01 - 2.1 = - 0.09 \ 3) : : : - 0.09 times frac{5}{9} = - frac{9 times 5}{100 times 9} = - frac{5}{100} \ 4) : : : - frac{5}{100} div 0.02 = - frac{5}{100} div frac{2}{100} = - frac{5 times 100}{100 times 2} = - frac{5}{2} = - 2 frac{1}{2} = - 2.5$

Answer 2

(3,618:1,8-2,1)*5/9:0,02 = (2,01-2,1) * 5/9 : 1/50 = - 0,09 * 5/9 * 50 = - 9/100 * 5/9 * 50 = - 1/20 * 50 = - 1/2 * 5 = - 5/2 = - 2,5