1.a.3x=15/2 b.5x/2=50 2.Periksa apakah nilai yg ada di dlmkurung adlh pnyelesaian untuk persamaan berikut a.n+5=19(n=1) b.7n+5=19(n=-2) c.4n+5=19(n=2) d.4p-3=13(p=1) e.4p-3=13(p=-4) f.4p-3=13(p=0)
3.Tentukan nilai x a.3x+4=7 b.6x-5=2x+11 c.3(2x-1)=5(x-1) d.3=4(x-2)=3(x-4)=2 e.x(4x)=3(x4)-4 f.3(2x+1)-4(x-2)=0
dodyhandoko1949
1. a. 3x = 15/2 x = 15/2 x 3 x = 45/2 x = 22 1/2 b. 5x/2 = 50 5x = 100 x = 20 2. a. salah(n = 14) b. salah(n = 2) c. salah(n = 3 2/4) d. salah(n = 4) e. salah(n = 4) 3. a. 3x + 4 = 7 3x = 7 - 4 3x = 3 x = 1 b. 6x - 5 = 2x + 11 6x - 2x = 11 + 5 4x = 16 x = 4
a. 3x = 15/2
x = 15/2 x 3
x = 45/2
x = 22 1/2
b. 5x/2 = 50
5x = 100
x = 20
2.
a. salah(n = 14)
b. salah(n = 2)
c. salah(n = 3 2/4)
d. salah(n = 4)
e. salah(n = 4)
3.
a. 3x + 4 = 7
3x = 7 - 4
3x = 3
x = 1
b. 6x - 5 = 2x + 11
6x - 2x = 11 + 5
4x = 16
x = 4