Answer:
See below ↓
Step-by-step explanation:
<u>Problem</u>
- <u />
<u>Work</u>
- <u />
- The student's mistake was that instead of taking x(x + 7) as the LCM (Least Common Multiple), he took x + 7, which is not possible in this case
<u>Solution</u>
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Answer:
11.88
Step-by-step explanation:
Answer:
-0.9
Step-by-step explanation:
-1.7 - (-0.8)
= -1.7 + 0.8
= -0.9
Answer:
All work shown in image...
Step-by-step explanation:
Answer:
b)Add the equations to eliminate x.
Step-by-step explanation:
y= x+20
y= - x+2
Result of the addition: (-x cancels x)
2y = 22
y =11
11=x +20 -9 = x
11=9+2
11 = -9 +20