Answer:
- 8
Step-by-step explanation:
13 - x = 21
-x = 8 Subtract 13 from both sides
x = -8 Divide both sides of -1 since x still has a negative.
x=-9
0
subtracting like terms
1 + 4x = -5 + 7x
<u> -4x </u> <u> - 4x </u>
1 = -5 + 3x
<u>+5 </u> <u>+5 </u>
6 = 3x
2 = x
Answer: x = 2