Answer:
5/21
Step-by-step explanation:
1/7 + 2/21 = ?
lcd of 7 and 21 is 21 so;
( 2/21 x 1/1) + 1/7 x 3/3) = 5/21
Step-by-step explanation:Create equivalent expressions in the equation that all have equal bases.
2
x
−
5
=
2
3
Since the bases are the same, then two expressions are only equal if the exponents are also equal.
x
−
5
=
3
Move all terms not containing
x
to the right side of the equation.
Tap for fewer steps...
Add
5
to both sides of the equation.
x
=
3
+
5
Add
3
and
5
.
x
=
8
Answer:
- 15 - 7 (Parentheses)
- 3² (Exponents)
- 8 × 2 (Multiplication)
- 40 ÷ 8 (Division)
- 5 + 9 (Addition starting from the leftmost)
- 14 + 16 (Addition after the first addition operation)
Concept:
When encountering questions that ask for simplifying expressions through operation, following the PEMDAS method would be easier:
- <u>P</u>arentheses
- <u>E</u>xponents
- <u>M</u>ultiplication
- <u>D</u>ivision
- <u>A</u>ddition
- <u>S</u>ubtraction
Therefore, the whole process of simplifying the given expression should follow the PEMDAS method. <u>For extra</u>, whenever there are two occurences of the same operation, then prioritize the leftmost and go right.
Hope this helps!! :)
Please let me know if you have any questions or need further explanation
Answer:
yeeeeeeeees
Step-by-step explanation:
yeeeeeeeeeeees
D + e = 12
-d + e = -8
---------------
2e = 4
e = 2
d + e = 12
d + 2 = 12
d = 10
Answer: (10,2)
