Question

15. 3(x+4)+ 5 (x+3)=2x-27​

Answer 1

Answer:

3(X+4)+5(X+3)=2x-27

=3x+12+5x+15=2x-27

=3x-2x+5x= (-27-12)

=X+5x= (-39-15

6x= -54

X= -54/6

X= -9

Answer 2

$\sf{Answer}$

Step by step explanation :-

3 ( x + 4 ) + 5 ( x + 3 ) = 2x - 27

3x + 12 + 5x + 15 = 2x -27

Simplify LHS

3x + 5x + 12 + 15 = 2x - 27

8x + 27 = 2x -27

Tranpose 2x to RHS & 27 to LHS

8x - 2x = -27 -27

6x = -54

x = -54/6

x = -9

Verification:-

Substitute value of x in equation that should be equal to

LHS = RHS

3(x+4)+ 5 (x+3)=2x-27

At x = -9

3 ( -9 + 4) + 5 ( -9 + 3) = 2 (-9) -27

3 (-5) + 5 (-6) = -18 -27

-15 -30 = -45

-45 = -45

Verified !

______________________

Know more :-

Transportations :-

If we transpose + after transpose it becomes -

If we tranpose - after tranpose it becomes +

If we tranpose × after tranpose it becomes ÷

If we tranpose ÷ after tranpose it becomes ×

Multiplication of signs

(+) ( -) = -

(-) ( +) = -

( + ) ( + ) = +

(-) (-) = +