mohon di bantu gasy:v

3(4x-1) = 10x +7
12x - 3 = 10x +7
12x -10x = 7+3
2x = 10
x = 5

maka nilai 3x-5 = 3(5) - 5 = 15-5 = 10
jadi , 3x-5 = 10