Question

Rezolvați ecuațiile:
a) 88-29:3-49,2=2;
c) 129x +2,334-69=23,15;
b) 7,93:x+2,322-68=3;
d) 432:144.3x=12,16.

Answer 1

Explicație pas cu pas:

a) lipseste ceva din ecuatie

b)129x+2,334-69=23,15

129x+2,334=23,15+69

129x+2,334=92,15

129x=92,15-2,334

129x=89,816

x=89,816/129

x=aprox 0,69

c)7,93:x+2,322-68=3

7,93:x+2,322=3+68

7,93:x+2,322=71

7,93:x=71-2,322

7,93:x=68,678

x=68,678:7,93

x=aprox 8,66

d)432:144×3x=12,16

3×3x=12,16

3x=12,16:3

3x=4,05

x=4,05:3

x=1,35