Question

pls dau 30 puncte rezolvați următoarele exemple
a)0-1,2 + x = -3,64
b)x-(-4,2)= -5, 349
c) -4,2x= 1,17
d) = -7/26: x = -2 întregi 9/23​

Answer 1

Răspuns:

a) 0-1,2+X = -3,64

-1,2+x = -3,64

x = -2,44

b) x-(-4,2) = -5,349

x = -9,549

c) -4,2x = 1,17

x = -0,27

d) -7/26:x = (2•23+9)/23

-7/26:x = 55/2

x = 3,71•27,5

x = 102,025

Sper că te-am ajutat! :)

Answer 2

$\bold{a)} \ 0-1,2+x=-3,64 \\ -1,2+x=-3,64 \\ x=-3,64-(-1,2)=-3,64+1,2 \\ \boxed{x=-2,44}; \\ \bold{b)} \ x-(-4,2)=-5,349 \\ x+4,2=-5,349 \\ x=-5,349-4,2 \\ \boxed{a=-9,549}; \\ \bold{c)} \ -4,2x=1,17 \\ x=-\frac{1,17}{4,2} \\ \boxed{x=\frac{39}{175}} \\ \bold{d)} \ -\frac{7}{26} :x=-2\frac{9}{23}=-\frac{55}{23} \\ x=-\frac{7}{26}:(-\frac{55}{23})=\frac{7}{26} \cdot \frac{23}{55} \\ \boxed{x=\frac{161}{1 \ 430}}$