Question

3. Verify by substitution that
(i) the root of 3x - 5 = 7 is x = 4​

Answer 1

3x=7+5

3x=12

X=12/4

X=4

√4

2

no X not equal to 4

Answer 2

Answer:

4

Step-by-step explanation:

Given Equation: 3x-5=7

To show: the equation is satisfied for the value of x=4.

Solution: Put x=4 in the given equation

we get: LHS= 3(4)-5

=12-5

=7

=RHS

HENCE PROVED