X+(x:3)+40=180 Помогите плиз

Question

X+(x:3)+40=180 Помогите плиз

Answer 1

X=140-x/3
3x=420-x
4x=420
x=105

Answer 2

X+(x:3)+40=180X+(x:3)=180-40X+(x:3)=1402X=140*32Х=420X=420:2X=210