Question

ME AJUDEM NESSAS OPERAÇÕES???

a) 4x + 1 = 2 x 9

b) x÷ 5 = -10

c) -2 + x = 7 - 3x

e) 3x -1 = 2x +8

f) 12x + 4 = 8x + 4

g) 17x - 3 = -3x + 17

h) 2x + 3x - 2 = -17

i) 9 + 4x + x = 11+x

j) 2x+1+3x = 4x+7

Answer 1

a) 4x + 1 = 2x + 9
4x - 2x = 9 - 1
2x = 8
x = 8/2 = 4

b) x÷ 5 = -10
x = -10 * 5
x = - 50

c) -2 + x = 7 - 3x
x + 3x = 7 + 2
4x = 9
x = 4/9

e) 3x -1 = 2x +8
3x - 2x = 8 + 1
x = 9

f) 12x + 4 = 8x + 4
12x - 8x = 4 - 4
4x = 0 
x = 0

g) 17x - 3 = -3x + 17
17x + 3x = 17 + 3
20x = 20
x = 20/20
x = 1

h) 2x + 3x - 2 = -17
5x = -17 + 2
5x = -15
x = -15/5
x = -3

i) 9 + 4x + x = 11+x
5x - x = 11 - 9
4x = 2
x = 2/4
x = 1/2

j) 2x+1+3x = 4x+7
5x - 4x = 7 - 1
x = 6