Question

Ex 6 testul 4 dau coroana si inima

Answer 1

[(x + 90) × 5 + 700] : 600 = 2

[(x + 90) × 5 + 700] = 2 × 600

(x + 90) × 5 + 700 = 1200

(x + 90) × 5 = 1200 - 700

(x + 90) × 5 = 500

x + 90 = 500 : 5

x + 90 = 100

x = 100 - 90

x = 10