Question

Tentukan nilai x dari persamaan linear satu variabel berikut.

a. x+5 = 17
b. 3x - 3= 12
c x+3=2x- 8
d. 6x-5=2x+11
e. 3(2x-1)= 5(x-1)
f. x-(4-x)=3(x-4)
g. x= 3x+4/5
h. 7x-15=6(x+2)

pake cara yah, yg ga bsa ngitung ga ush jwb. tlg yah kakak"

Answer 1

A.
x+5=17
x=17-5
x=12
b.
3x-3=12
3x=12+3
3x=15
x=15/3
x=5
c.
x+3=2x-8
2x-x=3+8
x=11
d.
6x-5=2x+11
6x-2x=11+5
4x=16
x=16/4
x=4
e.
3(2x-1)=5(x-1)
6x-3=5x-5
6x-5x=-5+3
x=-2
f.
x-(4-x)=3(x-4)
x-4+x=3x-12
2x-4=3x-12
3x-2x=-4+12
x=8
g.
x=3x+4/5
5x=15x+4
15x-5x=-4
10x=-4
x=-4/10
h.
7x-15=6(x+2)
7x-15=6x+12
7x-6x=12+15
x=27

Answer 2

A. x = 17 - 5 = 12
b. 3x = 12+3 = 15 --> x= 15/3 = 5
c. 2x-x = 8+3 --> x = 11
d. 6x-2x = 11+5 --> 4x = 16 --> x = 4
e. 6x-3 = 5x-5 --> 6x-5x = 3-5 --> x = -2
f. x-4-x = 3x-12 --> 3x = 12-4 --> 3x = 8 --> x = 8/3
g. 3x-x = -4/5 --> 2x = -4/5 --> x = -2/5
h. 7x-6x = 12+15 --> x = 27