resolver em R as equacoes a seguir:
a)3+x=0
b)23x+2=2
c)12-7+4x=25
d)5x-3x=30
e)4x+10=45-3x
f)18x-43=65
g)23x-16=14-17x
h)10y-5(1+y)=3(2y-2)-20
Me ajudem por favor..
Soluções para a tarefa
a) 3 + x = 0
x = -3
b) 23x + 2 = 2
23x = 0
x = 0/23
x = 0
c) 12 - 7 + 4x = 25
4x = 25 - 12 + 7
4x = 20
x = 20/4
x = 5
d) 5x - 3x = 30
2x = 30
x = 30/2
x = 15
e) 4x + 10 = 45 - 3x
4x + 3x = 45 - 10
7x = 35
x = 35/7
x = 5
f) 18x - 43 = 65
18x = 65 + 43
18x = 108
x = 6
g) 23x - 16 = 14 - 17x
23x + 17x = 14 + 16
40x = 30
x = 30/40
x = 0,75
h) 10y - 5(1+y) = 3(2y-2) - 20
10y -5 -5y = 6y - 6 - 20
10y-6y-5y = -6-20+5
-y = -21 . (-1)
y = 21
Resposta:
Explicação passo-a-passo:
*OLA, BOA TARTE*
a) 3 + x = 0
x = -3
b) 23x + 2 = 2
23x = 0
x = 0/23
x = 0
c) 12 - 7 + 4x = 25
4x = 25 - 12 + 7
4x = 20
x = 20/4
x = 5
d) 5x - 3x = 30
2x = 30
x = 30/2
x = 15
e) 4x + 10 = 45 - 3x
4x + 3x = 45 - 10
7x = 35
x = 35/7
x = 5
f) 18x - 43 = 65
18x = 65 + 43
18x = 108
x = 6
g) 23x - 16 = 14 - 17x
23x + 17x = 14 + 16
40x = 30
x = 30/40
x = 0,75
h) 10y - 5(1+y) = 3(2y-2) - 20
10y -5 -5y = 6y - 6 - 20
10y-6y-5y = -6-20+5
-y = -21 . (-1)
y = 21
BONS ESDUDOS