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2x<7+1
2x<8
x<
x<4
2(x-30)<4(x-2)
2x-60<4x-8
2x-4x<-8+60
-2x<52
2x>-52
x>
x>-26
2n<3n-5
2n-3n<-5
-n<-5
n>5
semoga bermanfaat :)