zmirandalove100
23.10.2020 •
Mathematics
Can anyone become my math tutor please?
4x + 2x − 7 = 3x − 7
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Ответ:
3x=0 or x=0
Step-by-step explanation:
4x+2x-7=3x-7
4x+2x=3x
6x=3x
6x-3x=0
Ответ:
6x-7=3x-7
Minus 3x from both sides
3x-7=-7
Add 7 to both sides (using inverse operations)
Since -7 and 7 cancel each other it’s 0
3x=0
3 3 Divide by 3
Your answer is 0
Ответ:
therefore perimeter of the polygon is 48cm