Es urgente por fas ayúdenme doy coronita
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Respuestas a la pregunta
Respuesta:
5x + 6= 21 3
-2x + 8= -2 -3
6x + 2= -16 -3
2x + 4= 6 -1
x + 4= 10 6
-x + 1= -8 -9
x - 5= 5 10
-4 + 2x= 0 2
6x= 24 4
2x + 4=0 2
4x + 2= 2 + 4 1
3x - 2= 16 6
24x = 48 2
6x + 12 -8= 13 + 5 2.3
2x - 34= -20 7
Respuesta:
a) 5x + 6 = 21 => x = 3
b) -2x + 8 = -2 => 5 = x
c) 6x + 2 = -16 => x = -3
d) 2x + 4 = 6 => x = 1
e) x + 4 = 100 => x = 96
f) -x + 1 = +8 => 9 = x
g) x - 5 = 5 => x = 10
h) -4 + 2x = 0 => x = 2
i) 6x = 24 => x = 4
j) 2x + 4 = 0 => x = -2
k) 4x + 2 = 2 + 4 => x = 1
l) 3x - 2 = 16 => x = 6
m) 24x = 48 => x = 2
n) 6x + 12 - 8 = 13 + 5 => x = 2.333... => x = 7 ÷ 3
ñ) 2x - 34 = -20 => x = 7
Explicación paso a paso:
Solución:
a) 5x + 6 = 21 => 5x = 21 - 6 => 5x = 15 => x = 15 ÷ 5 => x = 3
b) -2x + 8 = -2 => 2 + 8 = 2x => 10 = 2x => 10 ÷ 2 = x => 5 = x
c) 6x + 2 = -16 => 6x = -16 - 2 => 6x = -18 => x = -3
d) 2x + 4 = 6 => 2x = 6 - 4 => 2x = 2 => x = 2 ÷ 2 => x = 1
e) x + 4 = 100 => x = 100 - 4 => x = 96
f) -x + 1 = -8 => 8 + 1 = x => 9 = x
g) x - 5 = 5 => x = 5 + 5 => x = 10
h) -4 + 2x = 0 => 2x = 0 + 4 => 2x = 4 => x = 4 ÷ 2 => x = 2
i) 6x = 24 => x = 24 ÷ 6 => x = 4
j) 2x + 4 = 0 => 2x = 0 - 4 => 2x = -4 => x = -4 ÷ 2 => x = -2
k) 4x + 2 = 2 + 4 => 4x + 2 = 6 => 4x = 6 - 2 => 4x = 4 => x = 4 ÷ 4 => x = 1
l) 3x - 2 = 16 => 3x = 16 + 2 => 3x = 18 => x = 18 ÷ 3 => x = 6
m) 24x = 48 => x = 48 ÷ 24 => x = 2
n) 6x + 12 - 8 = 13 + 5 => 6x + 4 = 18 => 6x = 18 - 4 => 6x = 14 => x = 14 ÷ 6
=> x = 2.333... => x = 7 ÷ 3
ñ) 2x - 34 = -20 => 2x = -20 + 34 => 2x = 14 => x = 14 ÷ 2 => x = 7
Comprobación:
a) 5(3) + 6 = 21 => 15 + 6 = 21 => 21 = 21
b) -2(5) + 8 = -2 => -10 + 8 = -2 => -2 = -2
c) 6(-3) + 2 = -16 => -18 + 2 = -16 => -16 = 16
d) 2(1) + 4 = 6 => 2 + 4 = 6 => 6 = 6
e) 96 + 4 = 100 => 100 = 100
f) -9 + 1 = -8 => -8 = -8
g) 10 - 5 = 5 => 5 = 5
h) -4 + 2(2) = 0 => -4 + 4 = 0 => 0 = 0
i) 6(4) = 24 => 24 = 24
j) 2(-2) + 4 = 0 => -4 + 4 = 0 => 0 = 0
k) 4(1) + 2 = 2 + 4 => 4 + 2 = 6 => 6 = 6
l) 3(6) - 2 = 16 => 18 - 2 = 16 => 16 = 16
m) 24(2) = 48 => 48 = 48
n) 6(2.333...) - 34 = -20 => 14 - 34 = -20 => -20 = -20
ñ) 2(7) - 34 = -20 => 14 - 34 = -20 => -20 = -20