Respuesta:
a. 9. (x + 5) = 45
(9x+45)−{45}=0
9x=0
(9)⋅x=0
x=0
b. -56 = 7.(x - 4)
−56−{7x−28}=0
−7x−28=0
(−7)⋅x+(−28)=0
x=−(−28)−7
x=−(7)⋅(−4)(7)⋅(−1)=−4
C. (2x-3).4 = 12
(8x−12)−{12}=0
8x−24=0
(8)⋅x+(−24)=0
x=−(−24)8
x=−(8)⋅(−3)(8)=3
d. (15x + 10) : 5 = 8
((3x+2)⋅5)⋅15−{8}=0
(3x+2)−{8}=0
3x−6=0
(3)⋅x+(−6)=0
x=−(−6)3
x=−(3)⋅(−2)(3)=2
e. (12x - 20) : 4 = -2x
((3x−5)⋅4)⋅14−{−2x}=0
(3x−5)−{−2x}=0
5x−5=0
(5)⋅x+(−5)=0
x=−(−5)5
x=−(5)⋅(−1)(5)=1
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Verified answer
Respuesta:
a. 9. (x + 5) = 45
(9x+45)−{45}=0
9x=0
(9)⋅x=0
x=0
b. -56 = 7.(x - 4)
−56−{7x−28}=0
−7x−28=0
(−7)⋅x+(−28)=0
x=−(−28)−7
x=−(7)⋅(−4)(7)⋅(−1)=−4
C. (2x-3).4 = 12
(8x−12)−{12}=0
8x−24=0
(8)⋅x+(−24)=0
x=−(−24)8
x=−(8)⋅(−3)(8)=3
d. (15x + 10) : 5 = 8
((3x+2)⋅5)⋅15−{8}=0
(3x+2)−{8}=0
3x−6=0
(3)⋅x+(−6)=0
x=−(−6)3
x=−(3)⋅(−2)(3)=2
e. (12x - 20) : 4 = -2x
((3x−5)⋅4)⋅14−{−2x}=0
(3x−5)−{−2x}=0
5x−5=0
(5)⋅x+(−5)=0
x=−(−5)5
x=−(5)⋅(−1)(5)=1