Podem me explicar,equaçoes sendo u igual a r?
alguns ex:
a)2x igual 6
b)-5x igual 10
c)-6x igual -9
d)2x+5 igual 9
e)x+15 igual -4x
f)x-12 igual 4x
g)5x+2 igual 2x-4
h)5x+4-2x igual 26-3x
i)y+9+5y igual -3+2y+7
j)15x igual 8+20x
k)3(x igual 2)+5 igual x+12
l)4(x-2)+3(2x-1) igual 6(2x-3)
m)x/2 igual 12/3
n)2x/5 igual 1/2
o)2x/3+1/2 igual x/4-3/2
(o "igual" sao aqueles dois tracinhos, eu to no celular e nao tem como colocar,ajuda por favor )
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Verified answer
2x = 6
2x/2 = 6/2
x = 3
2x + 5 = - 9
2x = -9 -5 = -14
2x/2 = -14/2
x = -7
x + 15 = -4x
x + 4x = -15
5x = -15
5x/5 = -15/5
x = -3
3*(x + 2) + 5 = x + 12
3x + 6 + 5 = x + 12
3x - x = 12 - 11
2x = 1
x = 1/2
x/2 = 12/3 = 4
x = 8
2x/5 = 1/2
4x = 5
x = 5/4
2x/3 + 1/2 = x/4 - 3/2
2x/3 - x/4 = -3/2 - 1/2 = -4/2 = -2
8x/12 - 3x/12 = -2
5x = -24
x = -24/5
pronto