Me ajudem!!
a) X+7= -3x +28
b) 17x-186=3x+10
c) 3x -7=2x+5
d) 7x+8=4x -10
e)3 (3x - 1) = 2 (3x +2)
Soluções para a tarefa
Respondido por
1
a) x+7 = -3x+28
x+3x = 28-7
4x=21
x=21/4
x=5,25
b) 17x-186=3x+10
17x-3x=10+186
14x=196
x=196/14
x= 14
c) 3x-7=2x+5
3x-2x=5+7
x=12
d) 7x+8=4x-10
7x-4x=-10-8
3x=-18
x=-18/3
x= -6
e) 3 (3x-1) = 2(3x+2)
9x-3=6x+4
9x-6x=4-1
3x=3
x=3/3
x-1
x+3x = 28-7
4x=21
x=21/4
x=5,25
b) 17x-186=3x+10
17x-3x=10+186
14x=196
x=196/14
x= 14
c) 3x-7=2x+5
3x-2x=5+7
x=12
d) 7x+8=4x-10
7x-4x=-10-8
3x=-18
x=-18/3
x= -6
e) 3 (3x-1) = 2(3x+2)
9x-3=6x+4
9x-6x=4-1
3x=3
x=3/3
x-1
lele1238:
Obg
Por nada :D
Na realidade a E fiz errada o certo seria 9x-6x=4+3 → 3x=7 → x=7/3
Descule
*desculpe
Respondido por
0
a) x+7=-3x+28
4x + x = 28 - 7
4x = 21
x = 21/4
b) 17x-186=3x+10
17x - 3x = 10 + 186
14x = 196
x = 196/14
x = 98/7
x = 14
c) 3x-7=2x+5
3x - 2x = 5 + 7
x = 12
d) 7x+8=4x-10
7x - 4x = -10 -8
3x = -18
x = -6
e) 3(3x-1)=2(3x+2)
9x - 3 = 6x + 4
9x - 6x = 4 + 3
3x = 7
x = 7/3
4x + x = 28 - 7
4x = 21
x = 21/4
b) 17x-186=3x+10
17x - 3x = 10 + 186
14x = 196
x = 196/14
x = 98/7
x = 14
c) 3x-7=2x+5
3x - 2x = 5 + 7
x = 12
d) 7x+8=4x-10
7x - 4x = -10 -8
3x = -18
x = -6
e) 3(3x-1)=2(3x+2)
9x - 3 = 6x + 4
9x - 6x = 4 + 3
3x = 7
x = 7/3
Perguntas interessantes