Question

6u+42=-8(u-7) solve for u

Answer 1

u=1
6u+42=-8u+56
6u=-8u+56-42
6u=-8u+14
6u+8u=14
14u=14
u=1

Answer 2

49

Explanation:

6u+42=8(u-7)

6u+42=8u-56

-6u -6u

-----------------

42=2u-56

+56 +56

---------------------

98=2u

----------

2

49=u