1. -x + 8 = 2-x
2. 8x + 7 = 9
3. -2x – 9 = 3x
Jawaban:
1. -x + 8 = 2 – x
-x + x = 2 – 8
= -6
2. 8x + 7 = 9
8x = 9 – 7
8x = 2
x = 2/8
x = 1/4
3. -2x – 9 = 3x
-2x – 3x = 9
-5x. = 9
x. = 9/5
1. -x + 8 = 2-x
2. 8x + 7 = 9
3. -2x – 9 = 3x
Jawaban:
1. -x + 8 = 2 – x
-x + x = 2 – 8
= -6
2. 8x + 7 = 9
8x = 9 – 7
8x = 2
x = 2/8
x = 1/4
3. -2x – 9 = 3x
-2x – 3x = 9
-5x. = 9
x. = 9/5