Question

Give first the step you will use to separate the variable and then solve the equation:
(a) x – 1 = 0
(b) x + 1 = 0
(c) x – 1 = 5
(d) x + 6 = 2
(e) y – 4 = – 7
(f) y – 4 = 4
(g) y + 4 = 4
(h) y + 4 = – 4

Answer 1

(i) Let m be the number of Parmit’s marbles.
5m+7=37

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(ii) Let the age of Laxmi be y years.
3y+4=49

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(iii) Let the lowest score be l.
2l+7=87

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(iv) Let the base angle of the isosceles triangle be, b so vertex angle = 2b
2b+b+b=180$^{\circ}$
$\Rightarrow 4b=180^{\circ}$[Angle sum property of  a $\Delta$]