Question

Determina numerele A, B si C din tabelul de mai jos

A B
94+x=100 A=43+3x+3y
si y:17=6
B=[152-5(x+y)]
56-28:(x+2)=54
si (38+y)×3=168
C=300(5y-3x)
28×(x+235)=6860
si y-35=13

Answer 1

94+x=100
x=100-94
x=6
A=43+3x+3y si y:17=6
y=6x17=102
A=43+3x6+102=43+18+102=163
A=163

B
56-28:(x+2)=54
28:(x+2)=56-54
x+2=28:2
x+2=14
x=14-2
x=12

 (38+y)×3=168
 38+y=168:3
38+y=56
y=56-38
y=18
B=[152-5x(12+18)]
B=(152-5x30)
B=(152-150)
B=2

C=300(5y-3x)
28×(x+235)=6860
x+235=6860:28
x+235=245
x=245-235
x=10 
si y-35=13
y=13+35
y=48
C=300x(5y-3x)=300x(5x48-3x10)=300x(240-30)=300x210=63 000