Question

Can anyone help me with this?

Answer 1

Answer:

$\sqrt{7}$

Step-by-step explanation:

Given

4$\sqrt{7}$ - 10$\sqrt{7}$ + 7$\sqrt{7}$ ( add the coefficients of the terms )

= (4 - 10 + 7) $\sqrt{7}$

= 1$\sqrt{7}$

= $\sqrt{7}$