Question

How many solutions does 0.75(x+40)=0.35(x+20)+0.35(x+20) have?

Answer 1

0.75(x + 40) = 0.35(x + 20) + 0.35(x + 20)

is the answer d

Answer 2

Only one because there is one variable and the combined coefficients of x are non-zero.
(0.75(x+40)=0.70(x+20), 0.05x=14-30=-16, x=-320)