Raja solved the inequality 3x − 5 < 1. His work is shown below.
Step 1: 3x − 5 < 1
Step 2: 3x < 1 + 5
Step 3: 3x < 6
Step 4: x ≥ 2
Where did Raja make an error in his calculation? Explain.
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Answer:
on step 4
I think so
because only changes<( the less than) or>( greater than) sign in minus .
when passes from equals to
like,
3x+5<1
3x>-4
x>-4/3
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