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Answer:
x=4
Step-by-step explanation:
Because 4 to the power of 2 is 16.
Then, you subtract: 16x - 7x
Then, what you are going to see is 9x=3x+24
So, you subtract: 9x - 3x
Finally, you will have 6x=24... You divide: 24/6 and the answer is x=4.
Answer:
Noor's age is 12 & Salma's age is 18
Step-by-step explanation:
Noor's age: N
Salma's age: S
: given
: given
: isolate "N"
: substitute the value of N for N to find the value of "S"
: subtract 3 from both sides
≡
: multiply both sides by 2
: add like values
: divide both sides by 3
S = 18
now insert that value into the initial equation:

: subtract 18 from both sides