Question

2) Resolver las siguientes ecuaciones.
a) 10x – 10 = 5(x + 2) b) 4 (x + 5) = 2x + 34 c) 10 (x + 2) = 8x + 22




d) 5 (x + 4) = 3 (x + 10) – 8 e) x + 19 = 2 (x + 6) f) 4 (x + 10) = 2 (x + 22)





g) 6 (x + 5) = 7x + 25 h) 7 (x + 4) = 5 (x + 6) + 6 i) 4 (2x + 4) = 20 (2x – 12)





j) 5 (3x + 10) = 2x + 40

Answer 1

Respuesta:

10x-10=5x+10

10x-5x=10+10

5x=20

X=20/5

X=4

4(x+5)=2x+34

4x+20=2x+34

4x-2x=34-20

2x=14

X=14/2

X=7

10(x+2)=8x+22

10x+20=8x+22

10x-8x=22-20

2x=2

X=1

5 (x + 4) = 3 (x + 10) – 8

5x+20=3x+30-8

5x-3x=30-8-20

2x=2

X=1

x + 19 = 2 (x + 6)

X+19=2x+12

19-12=2x-x

7=x

4 (x + 10) = 2 (x + 22)

4x+40=2x+44

4x-2x=44-40

2x=4

X=2

6 (x + 5) = 7x + 25

6x+30=7x+25

30-25=7x-6x

5=x

(x + 4) = 5 (x + 6) + 6

X+4=5x+30+6

X+4=5x+36

4-34=5x-x

-30=4x

-30/4=x

4 (2x + 4) = 20 (2x – 12)

8x+16=40x-240

16+240=40x-8x

256=32x

256/32=x

8=x

5 (3x + 10) = 2x + 40

15x-50=2x+40

15x-2x=40+50

13x=90

X=90/13