class 7 practice test for pt1math set 1
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class math 7 chapter 4
NCERT Solutions for Class 7 Maths Chapter 4 Simple Equations Exercise 4.1 Ex 4.1 Class 7 Maths Question 1. Complete the given column of the table: Solution: Ex 4.1 Class 7 Maths Question 2. Check whether the value given in the brackets is a solution to the given equation or not: (a) n + 5 = 19; (n = 1) (b) 7n + 5 = 19; in – -2) (c) 7n + 5 = 19; (n = 2) (d) 4p – 3 = 13; (p = 1) (e) 4p – 3 = 13; (p = -4) (f) 4p-3 = 13; (p = 0) Solution: (a) n + 5 = 19 (n = 1) Put n = 1 in LHS 1 + 5 = 6 ≠ 19 (RHS) Since LHS ≠ RHS Thus n = 1 is not the solution of the given equation. (b) 7n + 5 = 19; (n = -2) Put n = – 2 in LHS 7 × (-2) + 5 = -14 + 5 = -9 ≠ 19 (RHS) Since LHS ≠ RHS Thus, n = -2 is not the solution of the given equation. (c) 7n+ 5 = 19; (n = 2) Put n = 2 in LHS 7 × 2 + 5 = 14 + 5 = 19 = 19 (RHS) Since LHS = RHS Thus, n – 2 is the solution of the given equation. (d) 4p – 3 = 13; (p = 1) Put p = 1 in LHS 4 × 1 – 3 = 4 – 3 = 1 ≠ 13 (RHS) Since LHS ≠ RHS Thus, p = 1 is not the soluti...
class 7 practice test for pt1math set 1
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