To solve the equation (2+x)×3.1=-12.4:
First, distribute the 3.1 to (2+x):
6.2 + 3.1x = -12.4
Subtract 6.2 from both sides:
3.1x = -18.6
Divide by 3.1:
x = -6
Therefore, the solution to the equation (2+x)×3.1=-12,4 is x = -6.
To solve the equation (-1.9)×(-2.4)=12:
Multiply -1.9 by -2.4:
-1.9 * -2.4 = 4.56
Therefore, the solution to the equation (-1,9)×(-2,4)=12 is 4.56.
To solve the equation (2+x)×3.1=-12.4:
First, distribute the 3.1 to (2+x):
6.2 + 3.1x = -12.4
Subtract 6.2 from both sides:
3.1x = -18.6
Divide by 3.1:
x = -6
Therefore, the solution to the equation (2+x)×3.1=-12,4 is x = -6.
To solve the equation (-1.9)×(-2.4)=12:
Multiply -1.9 by -2.4:
-1.9 * -2.4 = 4.56
Therefore, the solution to the equation (-1,9)×(-2,4)=12 is 4.56.