Question

3. Verify by substitution that
(1) the root of 3x - 5 = 7 is x = 4
(111) the root of 5x - 8 = 2x - 2 is x = 2
z
please solve it​

Answer 1

Answer:

Explanation:

3x-5=7

3*4-5=7

12-5=7

7=7

Answer 2

3x-5=7 ........................(i)

putting x=4 in LHS of (i) we get

LHS=3*4-5

=12-5

=7

LHS= RHS

4 is the root of the equation.

_____________________

5(2) -82(2) -2

10-8=4-2

2=2

Hence verified