Question

Exercis
1. Check whether the value given in the
brackets is the root of the given equation
or not.
a) 7p+5 = 19 [p = -2]
b) 4m - 3 = -5 [m=-3]
c) 15 = 3 - 4x [x = -2]
d) = 6 [t = 18]
3​

Answer 1

Answer:

d) = 6 [t = 18]

3

Step-by-step explanation:

by substituting this value you get 0

Answer 2

Answer:

Solution 2 :

(a) n+5 = 19 (n=1)

1+5\ =\ 4\ \ne\ n+5\ =\ 19\1+5 = 4

= n+5 = 19

(b) 7n+5 = 19 (n=-2)

7\times\left(-2\right)\ +\ 5\ =\ 19\7×(−2) + 5 = 19

-14+5\ =\ 19\−14+5 = 19

9\ne199

=19

(c) 7n+5 = 19 (n=2)

7\times2+5=19\7×2+5=19

14+5\ =\ 19\14+5 = 19

19=1919=19

(d) 4p-3 = 13 (p=1)

4\times1-3=13\4×1−3=13

4-3=134−3=13

1\ne13\1

=13

(e) 4p-3 = 13 (p=-4)

4\left(-4\right)\ -3\ =\ 134(−4) −3 = 13

-16\ -3\ =\ 13\−16 −3 = 13

-19\ \ne13−19

=13

(f) 4p-3 = 13 (p=0)

4\times0\ -3=134×0 −3=13

0-3=130−3=13

-3\ne13−3

=13