Exercise 15B
Question 1
Solve each of the following equations.
1. (i) a+3=7
(ii) p+13=19
(iii) x+21=20
(iv) 112+t=312
2. (i) p−1=4
(ii) a−20=−20
(iii) x−43=23
(iv) p−0.7=1.3
3. (i) 6x=24
(ii) 11n=1.21
(iii) 6y=0
(iv) −4r=0.4
4. (i) x3=10
(ii) p8=4
(iii) a−3=12
(iv) n6=1.5
Multiple Choice Questions (MCQs)
Tick (✔) the correct option.
5.x−5=−1 has the solution
(a) 4
(b) −4
(c) −6
(d) 6
6.Which equation has a solution −2 ?
(a) x−7=9
(b) 9+x=7
(c) x−9=7
(d) x+9=−7
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