Question

Encontre o valor de x.

A) 4x+12=36
B) 8x+14=22
C)3x-205=6,5
D) 2 (x+4)=12
E) 2 (x-6)+3=19
F) 3 (x-8)+10x=67

Me ajudem por favor

Answer 1

A) 4x +12 =36
4x = 36 - 12
4x = 14
x = 14/4
x = 3,5

B) 8x + 14 = 22
8x = 22 - 14
8x = 8
x = 8/8
x = 1

C)3x - 205 = 6,5
3x= 6,5 + 205
3x = 211,5
x = 211,5/3
x= 70,5

D) 2(x +4) = 12
2x + 8 = 12
2x = 12 - 8
2x = 4
x = 4/2
x = 2

E)2( x-6 ) + 3 = 19
2x - 12 + 3 = 19
2x = 19 + 12 - 3
2x = 31 - 3
2x = 28
x = 28 /2
x = 14

F) 3 (x -8) + 10x = 67
3x - 24 + 10x = 67
3x + 10x = 67 + 24
13x = 91
x = 91 / 13
x = 7

Espero ter ajudado

Answer 2

a)4x+12=36
4x=36-12
4x=24
x=24/4
x=6

b)8x+14=22
8x=22-14
8x=8
x=8/8
x=1

c)3x-205=6,5
3x=6,5+205
3x=211,5
x=211,5/3
x=70,5

d)2(x+4)=12
2x+8=12
2x=12-8
2x=4
x=4/2
x=2

e)2(x-6)+3=19
2x-12+3=19
2x-9=19
2x=19-9
2x=10
x=10/2
x=5

f)3(x-8)+10x=67
3x-24+10x=67
3x+10x=67+24
13x=91
x=91/13
x=7