Question

determine a soluçao das equaçoes

a)4/5x+12=2(x-6

b) 5(x+2)=6x-1

c)x+6/2=3x-6


d)1x/4+9=12-3x

e)-4(a+2)=3(a-7)

f)x/4+2/5=2x-5/3


g)12y+4=1/4y -6/5


me ajudem nessa por favor.... obrigada!

Answer 1

a) 4/5x +12 = 2x - 12

4/5x - 2x = -12 -12

- 6/5x = -´24 (-1)

6/5 x = 24

x = 24 : 6/5

x = 24. 5/6

x = 20

b) 5x + 10 = 6x - 1

5x - 6x = -1 -10

-x = -11

x = 11