Given 20 – 5x < 5(x + 8), find the smallest value of x, when
(i) x ∈ I
(ii) x ∈ W
(iii) x ∈ N
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Given: P = {x : 5 < 2x - 1 ≤ 11, x ∈ R}Q = {x : - 1 ≤ 3 + 4x < 23, x ∈ I} where R = {real numbers}, I = {integers}.Represent P and Q on number line. Write down the elements of P ∩ Q.
Solve the given inequation and graph the solution on the number line :
2y - 3 < y + 1 ≤ 4y + 7; y ∈ R