#2


Ecuaciones de primer grado (ejemplos resueltos)

-17x +97 = -26x +160

-17x +26x = 160 -97
9x = 63
x = 63/9
x = 7


-5x -78 = -10x -118
-5x +10x = -118 +78
5x = -30
x = -30/5
x = -6

15x +58 = 8x +30
15x -8x = 30 -58
7x = -28
x = -28/7
x = -4

-2x -14 = -x -9
-2x +x = -9 +14
-x = 5
x = 5/-1
x = -5

-2x -12 = -3x -21
-2x +3x = -21 +12
x = -9

-2x +17 = -x +11
-2x +x = 11 -17
-x = -6
x = -6/-1
x = 6

-13x +102 = -8x +67
-13x +8x = 67 -102
-5x = -35
x = -35/-5
x = 7

x -12 = 2x -18
x -2x = -18 +12
-x = -6
x = -6/-1
x = 6

3x -12 = 2x -8
3x -2x = -8 +12
x = 4

-7x -42 = -11x -66
-7x +11x = -66 +42
4x = -24
x =-24/4
x = -6

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