(3×Х+160)÷7=40 ; 90×(Х-8)+60=510; (15-Х)×50-36=314; (9×Х+37)÷8=8; 9×(56÷Х-5)=27;...

Question

(3×Х+160)÷7=40 ; 90×(Х-8)+60=510; (15-Х)×50-36=314; (9×Х+37)÷8=8; 9×(56÷Х-5)=27; (78-Х×6)÷6=7; 35÷(15-Х÷8)=5; (150÷Х+6)÷7=8;

Answer 1

(3×x+160)÷7=40 3×x+160=40×7 3×x+160=280 3×x=280-160 3×x=120 X=120÷3 X=40