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
(i) Let m be the number of Parmit’s marbles.
5m+7=37
(ii) Let the age of Laxmi be y years.
3y+4=49
(iii) Let the lowest score be l.
2l+7=87
(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 \(\Delta\)]
Solve the following equations by trial and error method: (i) 5p + 2 = 17 (ii) 3m – 14 = 4
Write equations for the following statements:
(i) The sum of numbers x and 4 is 9.
(ii) 2 subtracted from y is 8.
(iii) Ten times a is 70.
(iv) The number b divided by 5 gives 6.
(v) Three-fourth of t is 15.
(vi) Seven times m plus 7 gets you 77.
(vii) One-fourth of a number x minus 4 gives 4.
(viii) If you take away 6 from 6 times y, you get 60.
(ix) If you add 3 to one-third of z, you get 30