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Solve the equations:
a) 253x = 1/52-x
This is what I've done but i don't know if it's right so i need someone to check it for me please.
(52)3x = (5-1)2-x
6x = -2+x (x powers)
5x=-2
x= -2/5
b)3x-1/2 - 4 = 0
errm...i'm kinda stuck on this one, could someone start me off please?
3x-1/2 = 4
c) find the value of y
4y+1=82y-1
here's what i did:
(22)y+1 = (23)2y-1
2y+2=6y-3 (powers)
4y-5=0
y=5/4
Is that right?
Thanks in advance!
a) 253x = 1/52-x
This is what I've done but i don't know if it's right so i need someone to check it for me please.
(52)3x = (5-1)2-x
6x = -2+x (x powers)
5x=-2
x= -2/5
b)3x-1/2 - 4 = 0
errm...i'm kinda stuck on this one, could someone start me off please?
3x-1/2 = 4
c) find the value of y
4y+1=82y-1
here's what i did:
(22)y+1 = (23)2y-1
2y+2=6y-3 (powers)
4y-5=0
y=5/4
Is that right?
Thanks in advance!