Question

3. Verify by substitution that
(1) the root of 3x - 5-7 is x = 4
(11) the root of 3 + 2x = 9 is x = 3
(1) the root of 5x - 8 = 2x - 2 is x = 2 (iv) the root of 8 - 7y = 1 is y = 1
(v) the root of 8 is z = 56
7
trial-and-error method:
2​

Answer 1

Answer:

243tyy 75 7"' ch hvb

Step-by-step explanation:

vice&&y