Question

ecuaciones
a) 2x+3x= 12 b) 2(x+5)– 1​

Answer 1

a) 2x+3x= 12

5x= 12

x= 12÷5

x= 2.4

b) 2(x+5) = 1 // 2(x+5) -1

2x + 10 = 1 // 2x + 10 - 1 = 0

2x = 1 - 10 // 2x + 9 = 0

x = -9 ÷ 2 // x = -9 ÷ 2

x = -4.5 // x= -4.5