Question

8. Subtract - 20 from the sum of 136 and - 56.
9. Simplify:
1 [36-(-9)] + [15-(-25)]
ii( -25-(-5)] + [-20-(-60)]
​

Answer 1

Answer:

8. 100

9. i.85

ii.20

Step-by-step explanation:

8. 136+(-56)-(-20)= 136-56+20=100

9. i.36-(-9)=36+9=45

15-(-25)= 15+25= 40

45+40= 85

ii. -25-(-5)= -25+5= -20

-20-(-60)= -20+60=40

-20+40= 20

Answer 2

Answer:

8⟩ Step 1

sum of 136and -56 =136+(-56) =136-56 = 80

Step 2

sub -20 from 80= 80-(-20) =80+20 =100

9⟩ (I) [36-(-9)] +[15-(-25)] = [36+9] +[15+25] =45+40 =85

(ii) [-25-(-5)] + [-20-(-60)] =[-25+5] +[-20+60] = (-20)+40 = 20

Step-by-step explanation:

(-)(-)=+

(-)(+)=-

(+)(+)=+

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