Question

which out of the following are expressions with number only ? a.)y+3 b.)7×20=8z c.)5(21-7)+7×2 d.)5 e.)3× f.)5-5n g.)(7×20)-(5×10)-45+p​

Answer 1

Answer:

Expressions with only Number :

c ) 5( 21 - 7 ) + 7 × 2

d ) 5

Option C and D not containing any variables like x & y

a ) y + 3

y = -3

b ) 7 × 20 = 8z

140 = 8z

z = 140 / 8

z = 70 / 4

z = 35 / 2

c ) 5 ( 21 - 7 ) + 7 × 2

5 ( 14 ) + 14

70 + 14

84

d ) 5

e ) 3 × f

3f

f ) 5 - 5n

5n = 5

n = 5 / 5

n = 1

g ) ( 7 × 20 ) - ( 5 × 10 ) - 45 + p

140 - 50 - 45 + p

p = -140 + 50 + 45

p = -45