Question

3. Verify by substitution that
(1) the root of 3x - 5 = 7 is x = 4
the root of 5x - 8 2x - 2 is x = 2
(v) the root of = 8 is z = 56
(11) the root of 3 + 2x = 9 is x = 3
(iv) the root of 8 - 7y = 1 is y=1
please solve second, and last question ​

Answer 1

Step-by-step explanation:

3x-5=7

3*4-5=7

12-5=7

7=7