Matematika

Pertanyaan

isilah jawaban ini dengan benar. sekian terimakasih
isilah jawaban ini dengan benar. sekian terimakasih

1 Jawaban

  • 1. 2x-5/3=x-3
    =>2x-5=3(x-3)
    =>2x-5=3x-9
    =>2x-3x=-9+5
    =>-x=-4
    =>x=4

    6.4(2-y)<y+5
    =>8-4y<y+5
    =>-4y-y<5-8
    =>-5y<-3
    =>y>-3/-5
    =>y>3/5

    7.1-(x+9)<2x+7
    =>1-x-9>2x+7
    =>-x-8>2x+7
    =>-x-2x>7+8
    =>-3x>15
    =>x<15/-3
    =>x<-5

    8.5(a-6)<2(3a+1)
    =>5a-30<6a+2
    =>5a-6a<2+30
    =>-a<32
    =>a>-32

    9.2(x+1)-3(x-1)<_x+5
    =>2x+2-3x+3<_x+5
    =>-x+5<_x+5
    =>-x-x<_5-5
    =>-2x<_0
    =>x>_0/-2=0

    10.x-1/2<x+2/3
    =>2(x+2)<3(x-1)
    =>2x+4<3x-3
    =>2x-3x<-3-4
    =>-x<-7
    =>x>7

    maaf cuma itu....