Question

как решить уравнение ( 8*х-30):2=225

Answer 1

(8*х-30):2=225; (8*х-30)=225*2=450; (8*х-30)=450; 8х=450+30=480; 8х=480; х=480:8=60; х=60; (8*60-30):2=225; 225=225.