tercera tarea de sandra isabel de jesus luna tur. matutino "1" "6"

IDENTIDADES
1)-25x+157-18=-3x+25-67
-25x+139=-33x-42
-25x=-33x-42-139
-25x=-33x-181
-25x+33x=-181
8x=-181
x=-181/8
x=22.6

2)(2)(-4)(5)+(-2)(3)(8)+16x=145
(-8)(5)+(-2)(3)(8)+16x=145
-40-6(8)+16x=145
-40-48+16x=145
-88+16x=145
16x=1456+88
16x=233
X=233/16
x=14.5

4)29/7)(134)-45+29=15x-(34/6)
(4.14)(134)-45+29=15x-5,6
524.76-45+29=15x-5.6
508.76=15x-5.6
-15x=-5.6-508.76
-15x=-514.36
x=-514.36/15
x=34.29

5)256-(425/25)+(156/4)=36x
256-17+39=36x
278=36x
x=7.72

6)(-2)(-3)(-5)(4)+(-6)(-7)(4)-41=67-18x
-120+168-41=67 -18x
-7=67+7
18x=67+7
18x=74
x=74/18
x=-4.1

7)(12/9)+(13/15)-(18/39+222x=475-(1173)
1.3+.2-6+222x=475-2.75
-4.5+222x=472.25
222x=472.25+4.5
x=476.74/222
x=2.14
EXPRECIONES ALGEBRAICAS
8)15x
9)x/25
10)4x-8
11)12/x(3)
12)x=25
13)14+x
14)2x-3/y