Question

necesito ayuda plis :c

Answer 1

a) 2x-3/5 -7 = 0

2x-3-35/5 = 0

2x-38 = 0

2x = 38 ==> x = 38/2 = 19

b) x/2 + 6 - x/4 = 2x/5 + 3

2x+24-x/4 = 2x+15/3

x+24/4 = 2x+15/3

3x+72 = 8x+60

12 = 5x ==> 12/5 = x

c) x/3 + x/5 = x/2 + 11/6

5x+3x/15 = 6x+22/12

8x/15 = 6x+22/12

96x = 90x+330

6x = 330 ==> x = 330/6 = 55

d) 0,6x - 2,8x = 0,06x + 45,2

o,6x - 2,8x - 0,06x = 45,2

-2,26x = 45,2 ==> x = 45,2/-2,26 = -20

e) 1,2y - 3,6 = 0,3 + 1,8

1,2y = 0,3+1,8+3,6

1,2y = 5,7 ==> x = 5,7/1,2 = 4,75

f) 3x/5 + 7 = x/3 + 9

3x+35/5 = x+27/3

9x+105 = 5x+135

4x = 30 ==> x = 30/4 = 15/2