Selina solutions

# Question 1

Q1) Fill in the blanks :

(i) 5 + 4 = ………… and 5x + 4x = ………….

(ii) 12 + 18 = ………… and 12x2y + 18x2y = ………….

(iii) 7 + 16 = ………….. and 7a + 16b = …………

(iv) 1 + 3 = ………… and x2y + 3xy2 = ………..

(v) 7 – 4 = …………… and 7ab – 4ab = …………..

(vi) 12 – 5 = ………… and 12x – 5y = ……………

(vii) 35 – 16 = ………….. and 35ab – 16ba = ………….

(viii) 28 – 13 = …………. and 28ax2 – 13a2x = ………….

Solution 1:

(i) 5 + 4 = 9 and 5x + 4x = 9x

(ii) 12 + 18 = 30 and 12x^2y+18x^2y=30x^2y

(iii) 7 + 16 = 23 and 7a + 16b =7a + 16b

(iv) 1 + 3 = 4 and x^2y+3xy^2=x^2y+3xv^2

(v) 7 – 4 = 3 and 7ab – 4ab = 3ab

(vi) 12 – 5 = 7 and 12x – 5y = 12x – 5y

(vii) 35 – 16 = 19 and 35ab – 16ba = 19ab

(viii) 28 – 13 = 15 and 28ax^2-13a^2x=28ax^2-13a^2x

Want to top your mathematics exam ?

Learn from an expert tutor.

Lido

Courses

Race To Space

Teachers

Syllabus

Maths | ICSE Maths | CBSE
Science | ICSE Science | CBSE
English | ICSE English | CBSE

Terms & Policies

NCERT Syllabus

Maths
Science

Selina Syllabus

Maths
Physics
Biology

Allied Syllabus

Chemistry