Answer:
x = 21/10
Step-by-step explanation:
3/10 = x/7
Cross multiply.
10x = 21
x is 21/10
Multiply through by the LCM of 10 and 7 which is 70
we have
3/10 × 70 = x/7 × 70
21 = 10x
Divide both sides by 10
We have
21/10 = 10x /10
Hope this helps you
x² - x -6 = x² + 2x - 3x - 3*2
=x(x + 2) - 3(x + 2)
= (x + 2 )(x - 3)