Question

Afla numărul necunoscut:a) a-2145=1342 B) bx5=385 c) c:4=3r.2

Answer 1

a) a - 2145 = 1342

a = 1345 + 2145

a = 3490

b) b × 5 = 385

b = 385 : 5

b = 77

c) c : 4 = 3 rest 2

c = 4 × 3 + 2

c = 12 + 2

c = 14

Answer 2

$a)a - 2145 = 1342 \\ a = 1342 + 2145 \\ a = 3487$

$b)b \times 5 = 385 \\ b = 385 \div 5 \\ b = 77$

$c)c \div 4 = 3 \: rest \: 2 \\ c = 4 \times 3 + 2 \\ c = 12 + 2 \\c = 14$