Question

Solve for me please

Answer 1

Answer:

${ \rm{10x + 5y + 2z = 5}} \\ { \rm{4x - 5y - 5z = 8}} \\ { \rm{3x + 5y + 4z = 1}}$

• First find x

${ \rm{10x = 5 - 5y - 2z - - - (i)}}$

• Find y

${ \rm{4x = 8 + 5y + 5z - - - (ii)}}$

• Find z

${ \rm{3x = 1 - 5y - 4z - - - (iii)}}$

equate the three equations:

${ \rm{0z - 10= 2y}} \\ \\ { \boxed{ \bf{y = - 5}}}$

Find z

${ \rm{z = ( - 1 \times - 5)}} \\ \\ { \boxed{ \bf{z = 5}}}$

Find x

${ \rm{3x + 5y + 4z = 1}} \\ \\ { \rm{3x - 25 + 20 = 1}} \\ \\ { \rm{3x = 6}} \\ \\ { \boxed{ \bf{x = 2}}}$

Answer 2

Answer:

z=1/5

y=-1

x=2/5

Step-by-step explanation: