Question

А)решите уравнение:(3x+5)+(8x+1)=17 б)19-5(3x-1)=9 в) 30+5(3x-1)=35x-25

Answer 1

А)3х+5+8х+1=17
11х=17-6
11х=11
х=1
б)19-15х+5=9
-15х=9-19-5
-15х=-15
х=1
в)30+15х-5=35х-25
15х-35х=-25-30+5
-20х=-50
х=2.5

Answer 2

A) (3x+5)+(8x+1)=17 11x + 6 = 17 11x = 11 x = 1

B) 19-5(3x-1)=9 19 - 15x + 5 = 9 24 - 15x = 9 -15x = 9 - 24 -15x = -15 x = 1

C) 30+5(3x-1)=35x-25 30 + 15x - 5 = 35x - 25 25 + 15x = 35x - 25 15x - 35x = -25 - 25 -20x = -50 x = 2.5