Question

Resolva essas equações de 1° grau

a) 4x – 6 = 22
b) 9 – x = 2x
c) 8 + 4x = 6x -4
d) 3x + 1 = x + 9
e) 4x – 11 = 7 – 2x
f) 3x + 1 = 5 + x
g) x – 8 = -10
h) x + 3 = 3
i) 4x + 2 = -18
j) 17 + x = 13
k) 128 + x = 900
l) 2x + 3 = 15

Preciso pra hj pfv ❤

Answer 1

a)
4x - 6 = 22
4x = 22 + 6
4x = 28
x = 28/4
x = 7

b)
2x = 9 - x
2x + x = 9
3x = 9
x = 9/3
x = 3

c)
8 + 4x = 6x - 4
4x - 6x = -4 - 8
-2x = -12 . (-1)
2x = 12
x = 12/2
x = 6

d)
3x + 1 = x + 9
3x - x = 9 - 1
2x = 8
x = 8/2
x = 4

e)
4x - 11 = 7 - 2x
4x + 2x = 7 + 11
6x = 18
x = 18/6
x = 3

f)
3x + 1 = 5 + x
3x - x = 5 - 1
2x = 4
x = 4/2
x = 2

g)
x - 8 = -10
x = -10 + 8
x = -2

h)
x + 3 = 3
x = 3 - 3
x = 0

i)
4x + 2 = -18
4x = -18 -2
4x = -20
x = -20/4
x = -5

j)
17 + x = 13
x = 13 - 17
x = -4

k)
128 + x = 900
x = 900 - 128
x = 772

l) 2x + 3 = 15
2x = 15 - 3
2x = 12
x = 12/2
x = 6