Step-by-step explanation:
Q.9) ans is -15/25
Q.10) ans is 3
Q.11) 2x - 3 = 7
2x = 7 - 3
2x = 4
x = 4/2
x = 2 (ans)
Q.12) option <d> 5x+3 is not a linear equation.
Q.13) Let the present age of Sahil be x years
Then present age of Sahil's mother = 3x years
Now,
After 5 years Sahil's age = ( x+5 ) years
After 5 years Sahil's mother's age = (3x+5) years
Therefore ATQ, equation formed =
=> ( x+5 ) + ( 3x+5 ) = 66
or, x + 5 + 3x + 5 = 66
or, 4x + 10 = 66
or, 4x = 66 - 10
or, 4x = 56
or, x = 56/4
or, x = 14
Therefore,
Sahil's present age = x = 14 years
Sahil's mother's present age = 3x = 42 years
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Verified answer
Step-by-step explanation:
Q.9) ans is -15/25
Q.10) ans is 3
Q.11) 2x - 3 = 7
2x = 7 - 3
2x = 4
x = 4/2
x = 2 (ans)
Q.12) option <d> 5x+3 is not a linear equation.
Q.13) Let the present age of Sahil be x years
Then present age of Sahil's mother = 3x years
Now,
After 5 years Sahil's age = ( x+5 ) years
After 5 years Sahil's mother's age = (3x+5) years
Therefore ATQ, equation formed =
=> ( x+5 ) + ( 3x+5 ) = 66
or, x + 5 + 3x + 5 = 66
or, 4x + 10 = 66
or, 4x = 66 - 10
or, 4x = 56
or, x = 56/4
or, x = 14
Therefore,
Sahil's present age = x = 14 years
Sahil's mother's present age = 3x = 42 years
HOPE IT HELPS!
PLEASE MARK AS BRAINLIEST...
And very sorry for incomplete answer as I could not understand the other questions because the picture is a bit hazy...