Question

X x 16,5 + X x 3,5 = 85

Answer 1

\(\Rightarrow x\times\left(16,5+3,5\right)=85\\ \Rightarrow x\times20=85\\ \Rightarrow x=85:20\\ \Rightarrow x=4,25\)

Answer 2

x=4,25 nha