Question

Află numărul necunoscut a:7=125 b:2=275 7×c=91 d:7=896​

Answer 1

Răspuns:

a:7=125

a=125×7

a=875

b:2=275

b=275:2

b=137,5

7×c=91

c=91:7

c=13

d:7=896

d=896×7

d=6272

Answer 2

$a \div 7 = 125 \\ \frac{1}{7} a = 125 \\ a = 875$

$b \div 2 = 275 \\ \frac{1}{2} b = 275 \\ b = 550$

$7 \times c = 91 \\ 7c \div 7 = 91 \div 7 \\ c = 91 \div 7 \\ c = 13$

$d \div 7 = 896 \\ \frac{1}{7} d = 896 \\ d = 6275$