Answer:

1.) -50

2.) -70

3.) -32

Step-by-step explanation:

1.)Problem to solve:

-30+40-60

−30+40−60

1 Subtract the values -30−30 and -60−60

-90+40

−90+40

2 Add the values -90−90 and 4040

-50

The answer in number 1 is −50

2.)Problem to solve:

-15-20-35

−15−20−35

1 Subtract the values -15−15 and -20−20

-35-35

−35−35

2 Add the values -35−35 and -35−35

-70

−70

3.)Problem to solve:

10-\left(12\right)-30

10−(12)−30

1 Subtract the values 1010 and -12−12

-2-30

−2−30

2 Add the values -2−2 and -30−30

-32

−32