Question

Ex. 12. pls; Dau coronița+Multumesc+Mă abonez+10 p.

Answer 1

94+x=100=>x=100-94=>x=6
y÷17=6=>y=17×6=>y=102
A=43+3x+3y
A=43+3×6+3×102
A=43+18+306
A=367

56-28÷(x+2)=54
56-28/(x+2)=54
-28/x+2=54-56
-28/x+2=-2
28=(x+2)×2
28=2x+4
-2x=4-28
-2x=-24
x=12
(38+y)×3=168
114+3y=168
3y=178-114
3y=54
y=54÷3
y=18
B=(152-5(x+y))
B=(152-5(12+18))
B=152-5×30
B=152-150
B=2

28×(x+234)=6860
x+234=6870÷28
x+234=245
x=245-234
x=11
y-37=13
y=13+37
y=50
C=300-(5y-3x)
C=300-(5×50-3×11)
C=300-(250-33)
C=300-217
C=83

Sper ca te-am ajutat si sper ca o sa te ti de cuvant cu ce ai zis mai sus!