Answer:
the answer is (1)
Step-by-step explanation:
k = am +3mx
i) factorize out m from the expression
k = m(a+3x)
ii) rearrange the equation using commutative property
m(a+3x) = k
iii) divide both sides of the equation by (a+3x)
[tex] \frac{m(a+3x)}{(a + 3x)} = \frac{k }{(a + 3x)} [/tex]
[tex]m = \frac{k }{a + 3x} [/tex]
