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When 7 is subtract from three times a certain number the result is 28 what is the number
1 answer:
Answer:
x=49
Step-by-step explanation:
you replace the unknown with a variable (x)
you subtract 7 three times, so it x-7-7-7=28 or x-21=28
you add 21 to both sides, then you get x=49
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Answer:
Step-by-step explanation:
perimeter is the sun of all sides, so, (x)+(x+3)+(x-4)+(2x)
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Answer:
1/3
Step-by-step explanation:
N-7=-2
addd 7 to both sides
n+7-7=7-2
n+0=5
n=5