can you help me solve these problems step by step?

Question

-9(6+u)-2u=-10

and

13x+7(-3x-1)=-63

Answer 1

-9(6+u)-2u= -10
=-54 + 9u-2u= -10
+54 +54
= 7u= 44
= divide 7 on both sides
u= 6.28

13x-21x-7=-63
=-8x -7=63
+7 +7
= -8x = -56
= divide by 8 on both sides
x= 7

Answer 2

thank you!