Question

Ayuda porfis ☺

4-×=[1+×-(-1+3×)+1]

1=3×-7 (×+2)-2-3×+3 (1+3×)

5 (3×-1)-{-5-(20-24×)-16×}

4×(9-2×)+7×=8 (×-4)+8×(2-×)

(3×-4)(×+1)=×(3×-15)+11

(a-3)2+(a+1)2-(a+3)2=(a-2)2

1-{y-y (1-y)1}-1-{(y+1)(y-1)}+y

3 (3+×)(×-1)=(×-1)+3×(×-1)

2×-4×- -5

6z+5z-3=41

5×-3=9

7×+7=2 (×+1)


3× -2× -1=n
_ _ _
5 3 5


×-1 - ×-2 ×-3 = - ×-5
_ _ _ __
2 3 4 5



3 3
- + ___ = 0
5 2×-1

Answer 1

1)
4-×=[1+×-(-1+3×)+1] multiplicamos signos
4-x=[1+x +1-3x +1] y ahora separamos
-x -x +3x = 1 +1 +1 -4
x = -1

2)
1=3×-7 (×+2)-2-3×+3 (1+3×)
1 = 3x-7x -14 -2-3x+3+9x
-3x+7x+3x-9x = -14-2+3-1
-2x = -14
x = -14/-2
x = 7

3)
5 (3×-1)-{-5-(20-24×)-16×}
15x-5 -{-5-20+24x -16x}
15x-5 +5+20-24+16x
15x+16x -4 =0
31x = 4
x=4/31
x=0,129



4)
4×(9-2×)+7×=8 (×-4)+8×(2-×)
36x -8x² +7 = 8x -32+16x-8x²
-8x²+36x-8x-16x+8x²= -32-7
-8x²+8x²+12x = -39
12x = -39
x = -39/12
x = -3,25

5)
(3×-4)(×+1)=×(3×-15)+11
3x² -x-4 = 3x² -15x+11
3x²-3x² +15x = 11 +4
15x = 15
x = 1

6)
(a-3)2+(a+1)2-(a+3)2=(a-2)2
2a-6 + 2a+2 -2a-6 = 2a - 4
2a +2a -2a -2a = -4 +6 -2 +6
a = 6
7)
1-{y-y (1-y)1}-1-{(y+1)(y-1)}+y=0
1-[y -y+y²]-1 - [y²-1]+y = 0
1-y+y-y²-1-y²+1+y = 0
-y²-y²-y+y+y = -1 +1 -1
-2y²+y = -1
-2y+y = √-1
-y = √-1
y = √1
y= 1

8)
3 (3+×)(×-1)=(×-1)+3×(×-1)
(9+3x)(x-1) = x-1 +3x²-3x
3x²+6x-9 = x-1 +3x²-3x
3x²-3x²+6x-3x-x=-1+9
2x = 8
x=8/2
x=4

9)
2×-4×-( -5)=0
-2x=-5
x= -5/-2
x = 2,5

10)
6z+5z-3=41
11z = 41+3
z = 44/11
z = 4

11)
5×-3=9
x = 9+3/5
x = 2,4

12)
7×+7=2 (×+1)
7x-2x= 2-7
x = -5/5
x = -1

si no pude resolver los demás es porque los da signos y datos no están claros.

si tienes alguna duda de las operaciones resueltas solo dime

Answer 2

Respuesta:

Explicación paso a paso:

1)

4-×=[1+×-(-1+3×)+1] multiplicamos signos

4-x=[1+x +1-3x +1] y ahora separamos

-x -x +3x = 1 +1 +1 -4

x = -1

2)

1=3×-7 (×+2)-2-3×+3 (1+3×)

1 = 3x-7x -14 -2-3x+3+9x

-3x+7x+3x-9x = -14-2+3-1

-2x = -14

x = -14/-2

x = 7

3)

5 (3×-1)-{-5-(20-24×)-16×}

15x-5 -{-5-20+24x -16x}

15x-5 +5+20-24+16x

15x+16x -4 =0

31x = 4

x=4/31

x=0,129

4)

4×(9-2×)+7×=8 (×-4)+8×(2-×)

36x -8x² +7 = 8x -32+16x-8x²

-8x²+36x-8x-16x+8x²= -32-7

-8x²+8x²+12x = -39

12x = -39

x = -39/12

x = -3,25

5)

(3×-4)(×+1)=×(3×-15)+11

3x² -x-4 = 3x² -15x+11

3x²-3x² +15x = 11 +4

15x = 15

x = 1

6)

(a-3)2+(a+1)2-(a+3)2=(a-2)2

2a-6 + 2a+2 -2a-6 = 2a - 4

2a +2a -2a -2a = -4 +6 -2 +6

a = 6

7)

1-{y-y (1-y)1}-1-{(y+1)(y-1)}+y=0

1-[y -y+y²]-1 - [y²-1]+y = 0

1-y+y-y²-1-y²+1+y = 0

-y²-y²-y+y+y = -1 +1 -1

-2y²+y = -1

-2y+y = √-1

-y = √-1

y = √1

y= 1

8)

3 (3+×)(×-1)=(×-1)+3×(×-1)

(9+3x)(x-1) = x-1 +3x²-3x

3x²+6x-9 = x-1 +3x²-3x

3x²-3x²+6x-3x-x=-1+9

2x = 8

x=8/2

x=4

9)

2×-4×-( -5)=0

-2x=-5

x= -5/-2

x = 2,5

10)

6z+5z-3=41

11z = 41+3

z = 44/11

z = 4

11)

5×-3=9

x = 9+3/5

x = 2,4

12)

7×+7=2 (×+1)

7x-2x= 2-7

x = -5/5

x = -1