Question

Exercise 12.4
(1) 17 + x = 5
O
M
1. State which of the following are equations with a variable. In case of an equation
with a variable, identify the variable.
(ii) 2b - 3 = 7
(iii)(y-7) > 5
(0) 7 ~ 3 - 19 = 2
(c) 5 x 4-8 = 3
(vii) 7 = 11 ~ 5 - 12 x 4
(ix) =
2. Pick out the solution from the values given in the bracket next to each equation.
Show that the other values do not satisfy the equation.
(1) x + 12 = 20 (12, 8, 20,0)
(ii) ž = 7 (7,2, 10, 14
(iii) p - 4 = 0 (4, -4,8, 0)
(iv) n + 4 = 2 (-2,0, 2, 4)
(v) 2 - 3 = 7 (0, 3, 5, 7).
3
(vii) 2p < 15​

Answer 1

Answer:

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