AYUDAAAA POR FAVOR
calcula el valor de "x" en cada inciso
a) 3×+2=2×+5
b) 6×+10=2×+38
c) 8×+14=4×+38
d) 5.5×+9.5=-5×-16.5
e) 3×-12=14+5×
f) 19×+23=22×+20
g) -6+2×=3×-6+5
h) 7×+5=2(4×+10)
i) 1-(12×+8)=8+(15×+12)
j) 5+(25×-15)=5-(30×+45)
Respuestas a la pregunta
Explicación paso a paso:
Analizamos los problemas
A ) 3x+2 = 2x+5 | B) 6x+10 = 2x+38 | C) 8x+14 = 4x+38
3x-2x = 5 -2 | 6x-2x = 38-10 | 8x-4x = 38-14
x = 3 | 4x = 28 | 4x = 24
| x = | x =
| x = 7 | x = 6
---------------------------------|-------------------------------|-----------------------------------------
| |
D) 5.5x+9.5 = -5x-16.5 | E) 3x-12 = 14+5x | F) 19x+23 = 22x+20
5.5x+5x = -16.5-9.5 | 3x-5x = 14+12 | 19x-22x = 20-23
10.5x = -26 | -2x = 26 | -3x = -3
x = | x = | x =
x = | x = -13 | x = 1
---------------------------------|-------------------------------|---------------------------------------
G) -6+2x = 3x-6+5 | H) 7x+5 = 8x+20 | I ) 1-12x-8 = 8+15x+12
2x-3x = 6-6+5 | 7x-8x = 20-5 | -12x-15x = 8+12+8-1
-x = +5 | -x = 15 | -27x = 27
x = -5 | x = -15 | x =
| | x = -1
--------------------------------|----------------------------------|-----------------------------------
j) 5+25x-15 = 5-30x-45
25x+30x = 5-45+15-5
55x = -30