Question

LAUIUS
1. Solve the following equations by the trial and error method :
(a) 3x +1 = 10
(b) 4y = 20
Use the following equations by trial and error method:
b
2
(a) 3z + 12 = 15
(b) 5
3​

Answer 1

Answer:

1. ans (a) - 3

1. and (b) - 5

Answer 2

Answer:

1.a)3x+1=10

if we take x= 1:

3*1+1=3+1=4

LHS not equal to RHS

3*2+1=6+1=7

LHS not equal to RHS

3*3+1=9+1=10

LHS equal to RHS

b) 4y=20

if we take y=1:

4*1=4

LHS not equal to RHS

4*2=8

LHS not equal to RHS

4*3=12

LHS not equal to RHS

4*4=16

LHS not equal to RHS

4*5=20

LHS equal to RHS

2.a)3z+12=15

if we take z=1:

3*1+12=3+12=15

LHS equal to RHS

b) 5