Solve the following pairs of simultaneous equations
a) x + 3y = 14
3x + y = 10
b) 5x + y = 27
4x + 3y = 26
c) -6x + 5y = -14
-2x + y = -6
d) 2x + 5y = 14
3x + y = -5
e) -3x + 2y = 6
x + 4y = -9
f) 3x - 5y = 7
x + y = -11
g) 2x + 3y = 9
4x + y = -7
h) -x +5y = 7
5x + 5y = 19

a)

b)

c)

d)

e)

f)

g)

h)

take the logarithm of both sides (the base of the log doesn't matter):

apply the exponent property - this says that :

distribute the log terms on both sides:

group like terms together:

divide through both sides by the coefficient on :

you can do some additional rewriting here using the properties of the logarithm to simplify things if you like: