(−0.43)−(−0.87)= (-0.43)-(-0.87)= (−0.43)−(−0.87)=
Let's first consider the rule:
−(−x)=+x -(-x)=+x −(−x)=+x
Now let's write the exercise in the appropriate form:
−0.43+0.87= -0.43+0.87= −0.43+0.87=
We'll use the distributive property and solve the exercise step by step:
0.87−0.430.44 0.87\\-0.43\\0.44 0.87−0.430.44
0.44 0.44 0.44