Question

1) Resolva as seguintes equações:

a) 5X-3+X=2X+9
b) 17X-7X=X+18
c) X+X-4=17-2X+1
d) X+2×+3-5X=4X-9
e) 5X+6X-16=3X+2X-4
f) 5X+4=3X-2X+4
g) 4X-1=3X-3
h) 3X-6=2X-4
i) 2X-2=3X+4
j) 4X+6-2X=X-6+10+14

ME AJUDEM POR FAVOR!

Answer 1

a)
5x-3+x = 2x+9
-3-9 = 2x-x-5x
-11 = -4x(-1)
4x = 11
x = $\frac{11}{4}$
x = 2,75

b)
17x-7x = x+18
17-7x-x = 18
9x = 18
x = $\frac{18}{9}$
x = 2

c)
x+x-4 = 17-2x+1
x+x+2x = 17+1+4
4x = 22
x = $\frac{22}{4}$
x = 5,5

d)
x+2(3-5x) = 4x-9
x+6-10x = 4x-9
x-4x = -9-6
-3x = -15 (-1)
3x = 15
x = $\frac{15}{3}$
x = 5

e)
5x+6x-16 = 3x+2x-4
5x+6x-3x-2x = -4+16
6x = 12
x = $\frac{12}{6}$
x = 2

f)
5x+4 = 3x-2x+4
5x-3x+2x = 4-4
4x = 0
x = $\frac{0}{4}$
x = 0

g)
4x-1 = 3x-3
4x-3x = -3+1
x = -2

h)
3x-6 = 2x-4
3x-2x = -4+6
x = 2

i)
2x-2 = 3x+4
2x-3x = 4-2
-x = 2 (-1)
x = 2

j)
4x+6-2x = x-6+10+14
4x-2x-x = -6+10+14-6
x = 12