Question

answee of q 3 2 and 4
answer of q 4 2 4 6 8 10 ​

Answer 1

Answer:

4.) (ii) x = 17

(iv) y = 12

(vi) x = 12

(viii) x = 36

(x) z = 2

Step-by-step explanation:

3.) (ii) x = 3

3 + 2x = 9

=> 3 + 2(3) = 9

=> 3 + 6 = 9

=> 9 = 9     ∴ Verified

(iv) y = 1

8 - 7y = 1

=> 8 - 7(1) = 1

=> 8 - 7 = 1

=> 1 = 1    ∴ Verified

4.) (ii) x - 7 = 10

∴ x = 10 + 7 => 17    (Signs change to their inverse while switching sides)

(iv) 3y = 36

∴ y = 36/3 => 12

(vi) x/3 = 4

∴ x = 3*4 => 12

(viii) (1/2)x + 7 = 11

=> (1/2)x = 11 + 7 => 18

∴ x = 18 ÷ 1/2

=> 18*2 = 36 = x    (Dividing by a number is the same as by its reciprocal)

(x) z - 3 = 2z - 5

=> -3 = 2z - z - 5    (Signs change to their inverse while switching sides in an equation)

=> -3 + 5 = z

∴ z = 2