Question

W. *(1 + 2(3-1)] = 4x - 7
X. 20x - 4= 5x
y. 4x = -8x + 36

me ajudem​

Answer 1

w)

[(1 + 2(3-1))] = 4x - 7

[(1 + 2*2)] = 4x - 7

[(1 + 4)] = 4x - 7

5 = 4x - 7

5+7 = 4x

x= 12/4

x= 3

x)

20x - 4 = 5x

-4=5x-20x

-4 (*-1)=-15x (*-1)

4=15x

x=4/15

z)

4x = -8x + 36

4x +8 x = 36

12x = 36

x = 36/12 = 3