Hayley begins solving this problem by combining like terms. 3x + 5x = 10 which problem begins the same way? a) 5x = 20 b) 2(x + 5) = 20 c) x/4 = 30 d) 4x − 2x = 10

The marked price of an article is 25% above its selling price and the cost price is 30% less than its marked price . find the discount percent and gain percent. only a brainlest can solve it i will mark you brainlest