Answer:
-1081/250
1081 / 250
9/10
Explanation:
in the first question
both number is negative
this the answer is the negative of the sum of both number
-1.424-2.9
= -178/125 - 29/10
= -356/250 - 725/250
= -1081/250
in the second question
1.424 MINUS a NEGATIVE 2.9
there're two [ - ] so inactive it's a +
so simplify the equation first
1.424 - [-2.9]
=356/250 + 725/250
=1081/250
in the last question, double minus sign again, but note that -1.424 is negative
let work on the calculation
-1.424- [-2.9] - 0.576
= -1.424 + 2.9 - 0,576
= -356/250 + 725/250 - 144/250
= 225/250
= 45/50
= 9/10
feel free to ask in comment if you have any question