Tema:Ecuaciones de Primer Grado con una incógnita
Respuestas a la pregunta
Respuesta:
Ejercicio 1.
3x + 101 +4x-33-51x=-53x+31x-172
(3x + 4x - 51x) + (101 - 33) = (-53x + 31x) - 172
-44x + 68 = -22x - 172
-22x = -240
x = -240/-22
x = 120/11
Ejercicio 2.
3x - 14 - 12x +18x = 256 + 60x - 657x
(3x -12x + 18x) - 14 = 256 + (60x - 657x)
9x - 14 = 256 - 597x
606x = 270
x = 45 / 101
Ejercicio 3.
(-8x+15x+30x-51x)=53x-31x-100
-14x = 22x - 100
100=36x
x = 100/36
x = 25/9
Ejercicio 4.
9x - (5x + 3) - {2 + 8x - (7x-5)} - 9x =0
9x - 5x - 3 - {2 + 8x -7x +5)} - 9x = 0
4x - 3 - { 7 + x } - 9x = 0
4x - 3 -7 - x - 9x = 0
-6x = 10
x = 10/ -6
x= - 5/3
Ejercicio 5.
71 + [-5x + (2x +3)] = -25 -[-(3x + 4)-(4x+3)]
71 + [-5x + 2x +3] = -25 -[-3x -4 - 4x - 3]
71 + -3x +3 = -25 +7x + 7
74 - 3x = -18 + 7x
92 = 10x
x = 92/10
x=46/5
Ejercicio 6.
x + 3(x-1) = 6 + 4 (3x + 2)
x + 3x - 3 = 6 + 12x + 8
4x - 3 = 14 +12x
-17 = 8x
x = -17/8
Ejercicio 7
7(x +1) + 16(2x -3) = 3(5x - 7) -x
7x + 7 + 32x - 48 = 15x - 21 - x
39x - 41 = 14x - 21
25x = 20
x = 20/25
x = 4/5
Ejercicio 8
Ejercicio 9
187 -4(5x-3) = 30 +6(x-1)-6
187 - 20x + 12 = 30 + 6x - 6 - 6
199 - 20x = 18 + 6x
181 = 26x
x = 181/26
Ejercicio 10
7(18-x)-3(6x-5)=-(9x+7)-2(3x+5)-12
126 - 7x - 18x + 15 = -9x - 7 - 6x - 10 - 12
141 - 25x = -15x - 29
170 = 10x
x = 170/10
x = 17
2. 39−14−12+18=256+60−657
3. −8+15+30−51=53−31−100
4. 9−(5+3)−{2+8−(7−5)}−9=0
5. 71+[−5+(2+3)]=−25−[−(3+4)−(4+3)]
6. +3(−1)=6+4(3+2)
7. 7(+1)+16(2−3)=3(5−7)−
8. 3(2+2)−4(3−5)=(−3)−(+5)
9. 187−4(5−3)=301+6(−1)−6
10. 7(18−)−3(6−5)=−(9+7)−2(3+5)−12