anondriap
19.05.2021 •
Mathematics
What is x ?
7+2x/3=5
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Ответ:
-3
Step-by-step explanation:
7+2x/3=5
2x/3=-2
2x = -6
x = -3
Ответ:
x=-3
subtract 7 from both sides
simplify
multiply all yermsby the same value
cancel multiplied terms
multiply the numbers
divide both sides of the equation by the same term
simplify
Ответ:
8/9
Step-by-step explanation:
First, we can find a common denomiator.
The least common multiple of 2, 9, and 6 is 18.
Therefore, the lcd is 18.
1/2 = 1/2 * (9/9) = 9/18
2/9 = 2/9 * (2/2) = 4/18
1/6 = 1/6 * (3/3) = 3/18
Therefore, 1/2 + 2/9 + 1/6 = 9/18 + 4/18 + 3/18.
We can add the numerators together.
= 16/18
Divide the nuumerator and denominator by 2:
= 8/9