Question

Calcule o valor de x nas equações.
a)4(x+3)=20
b)5(2x-1)=2(x+4)
c)10-2(x+3)=8+3(2x+5)
d)x-2(x-1)=4-3(x-2)
e)2x-3(4-x)=5+4(2x+1)
f)6x-7(1-x)-(10x+4)=0

Answer 1

a)4(x+3) = 20.............x+3 =5........x= 2
b)5(2x-1) = 2(x-4)......10x - 5 = 2x + 8......8x = 13....x = 13/8
c)10-2(x+3) =8 +3(2x+5).......10-2x-6 =8 +6x+15....4x =  -19....x =19/4
d)x -2(x-1) =4-3(x-2).....x-2x+2=4 -3x+6....2x = 8....x = 4
e)2x -3(4-x) =5 +8x+4.....2x-12+3x =5 +8x +4.....3x =-21....x = -7
f)6x-7(1-x) -(10x + 4) = 0.....6x -7 +7x -10x -4 = 0....3x = 11...x = 11/3