Question

Determinati numerele A, B si C din tabelul de mai jos.​

Answer 1

Răspuns:

Explicație pas cu pas:

94 + x = 100 ; y : 17 = 6

x = 100-94 => x = 6

y = 6 ·17 => y = 102

A = 43 + 3x + 3y =>

A = 43+3·6+3·102

A = 43+18+306

A = 367

56-28:(x+2) = 54 => 56-54 = 28:(x+2) =>2 = 28:(x+2) =>

2·(x+2) = 28 => x+2 = 14 => x = 14-2 => x = 12

(38+y)·3 = 168 => 114 + 3y = 168 => 3y = 168-114 =>

3y = 54 => y = 54:3 => y = 18

B = [152-5·(x+y)] = [152-5·(12+18)] = 152-5·30 = 152-150 =>

B = 2

28·(x+235) = 6860  => x + 235 = 6860:28 =>

x+235 = 245 => x = 245-235 => x = 10

y-37 = 13 => y = 37+13 => y = 50

C = 300-(5y-3x) = 300-(5·50-3·10) = 300-(250-30)

C = 300-220 =>

C = 80