Question

Exercice n'11: Calcule:

A = 19+ (8-25);
B=(-15+6)-(23-18)
C = (154-6) +3-(-9+7):
D=-13+ (5+8)-(-4+8)
E = (-5)-(17+ (-13))-((-8) - (+2)):
F = (12-(-3)) - (12-(-3))
G=15-(-3-((+12)-16)):
H=-12-(-15 +30) -(65-20) - 20

Answer 1

Explanation:

Here in all these questions we need to follow the rules of BODMAS which tells us the steps to solve and mathematical operation.

B-Bracket

O-Of

D- Division

M-Multiplication

A-Addition

S-Subtraction

now,

A. 19+(8-25)

we need to solve what's inside the bracket first

so, 8-25= -17

=19+(-17)

=2

B. (-15+6)-(23-18)

=(-9)-5

= -14

C. (154-6)+3-(-9+7)

= 148+3-(-2)

=148+3+2

= 153

D. -13+(5+8)- (-4+8)

= -13+13-4

= -4

E. (-5)-(17+(-13))-((-8) -(+2))

= -5 -(4)-(-10)

= -5-4+10

= 1

F. (12-(-3))-(12-(-3))

= 15-15

=0

G. 15 -(-3-((+12)-16))

= 15-(-3-(-4))

= 15- 1

= 14

That's how we do it try the last one by your self!