Question

Q8. Simplify the following expressions:
a) -50+(-200)+300
b) (2x459)+(-50)+678-290-(400x 3)
c) 960/2+40-( 500/25)-(-300)+(-98)-(-890)
d) -200+(-450)-1600-650

Answer 1

Answer:

a) 50 b) -304

Step-by-step explanation:

a) -50-200+300

-250+300

50(Answer)

b) 518-50+678-290-1200

518+678-50-290-1200

1136-340-1200

1136-1540

-304

Answer 2

Answer:

a. 50

b. -644

c. 1651

d. -2900

Step by Step Solution:

(Application of concepts of PEMDAS)

a.

x = -50+(-200)+300

x = -250 + 300

x = 50

b.

x = (2x459)+(-50)+678-290-(400x 3)

x = 918 -50 + 678 - 290 - 1900

x = 918 + 628 - 290 - 1900

x = 1546 - 290 - 1900

x = 1256 - 1900

x =  -644

c.

x = 960/2+40-( 500/25)-(-300)+(-98)-(-890)

x = 960/2 + 40 - 20 + 300 - 98 + 890

x = 480 + 40 - 20 + 300 - 39 + 890

x = 520 - 20 + 300 - 39 + 890

x = 520 + 280 + 851

x = 800 + 851

x = 1651

d.

x = - 200 - 450 - 1600 - 650

x = - 200 - 450 - 1600 - 650

x = - 650 - 1600 - 650

x = - 2250 - 650

x = - 2900