Hitunglah x,dengan jalannya :

1) 3x = 21
2) 2x + 4 = 10
3) x + 5 = 2x – 7
4) $frac{1}{4}x +2=5$
5) x + 2 = 7
6) 4x + 3 = 11
7) $frac{1}{2} x+5=9$
8) 3x – 2 = 7
9) 3x + 5 = 5x – 7
10) $10+ frac{2}{3} x=x+9$

Hitunglah x,dengan jalannya :

Jawaban Terkonfirmasi

1) 3x = 21
1/3 x 3x = 1/3 x 21
x = 7
2) 2x + 4 = 10
2x + 4 – 4 = 10-4
2x = 6
1/2 x 2x = 1/2 x 6
x = 3
3) x + 5 = 2x-7
x – x + 5 = 2x – x – 7
5 = x – 7
5 + 7 = x -7+7
12 = x
4) 1/4x + 2 = 5
1/4x + 2 – 2 = 5 – 2
1/4x = 3
1/4x x 4 = 3 x 4
x = 12
5) x + 2 = 7
x + 2 – 2 = 7 -2
x = 5
6) 4x + 3 = 11
4x + 3 – 3 = 11 – 3
4x = 8
1/4 x 4x = 1/4 x 8
x = 2
7) 1/2x + 5 = 9
1/2x + 5 – 5 = 9 – 5
1/2x = 4
1/2x x 2 = 4 x 2
x = 8
8) 3x – 2 = 7
3x – 2+2 = 7+2
3x = 9
1/3 x 3x = 1/3 x 9
x = 3
9) 3x + 5 = 5x-7
3x-3x + 5 = 5x-3x-7
5 = 2x – 7
5 + 7 = 2x -7+7
12 = 2x
1/2 x 12 = 1/2 x 2x
6 = x
10) 10 + 2/3x = x + 9
2/3x – x = 9-10
2/3x – 3/3x = -1
-1/3x = -1
1/3x = 1
1/3x x 3 = 1 x 3
x = 3