Question

equações:
(a) 10x+16=14×+8
(b) 2(x-3)=-3((×-3)
(c) 4(5×-3)-64(3-×)-3(12×-4)=96
(d)5(×+1)+6(×+2)=9(×+3)

Answer 1

a) 10x+16=14x+8
10x-14x=8-16
-4x=-16 (-1)
4x=16
X=16/4
X=4

b) 2(x-3)=-3(x-3)
2x-6=-3x+9
2x+3x=9+6
5x=15
X=15/5
X=3

c)4(5x-3)-64(3-x)-3(12x-4)=96
20x -12 -192 +64x -36x +12=96
20x +64x -36x=96 +12 +192 -12
20x+28x=96+192+12×-12×
48x=288
X=288/48
X=6

d) 5(x+1)+6(x+2)=9(x+3)
5x+5+6x+12=9x+27
5x+6x-9x=27-5-12
5x-3x=27-17
2x=10
X=10/2
X=5