Cari sesuai pertidak samaan linear satu variebel. a) 1/2x + 5 > 15 b) 2y-7/2 ≤ 3 c) 2/3p + 4 ≤ 8
nkafirossi
A) 1/2 x + 5 > 15 = 1/2 x > 10 = x > 20 . *maybe xD
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Rajasurya
gtu aja? itu bukan cara pertidaksamaan linear .
kepo
kalau aku kayak gini sura) x + 5 > 15
agar ruas kiri per duanya habis,maka kedua ruas dikalikan 2
= 2( x + 5 > 2.15
=x +10 > 30
=x > 30-10
= x > 20
jadi f(x):{x|x>20}
= 1/2 x > 10
= x > 20 . *maybe xD
1/2 x > 15 - 5
1/2x > 10
x > 10 : 1/2
x > 20
b.2y-7/2 ≤ 3
2y ≤ 3 + 7/2
2y ≤ 6 1/2
y ≤ 13/2 : 2
y ≤ 13/4
c. 2/3p + 4 ≤ 8
2/3 p ≤ 8 - 4
2/3 p ≤ 4
p ≤ 4 : 2/3
p ≤ 6