Question

7x-2y=-14

Answer 1

in this question there are 2 unknowns
so rearrange the equation and solve, lets solve for x first
\[7x =2y-14\]
\[x =\frac{ 2y-14 }{ 7 }\]
now sub in this equation of x into original equation
\[7x-2y =-14 \
7(\frac{ 2y-14 }{ 7 })-2y +14 =0\]

Answer 2

now solve it by cancelling any possible terms
\[7(2y-2)-2y+14=0 now expand it
14y-14-2y+14=0\]
collect like terms and \[14y-2y=0\]
12y=0
y=12

Answer 3

got it? and to find the actual value of x simply sub in the y=12 value in the the x equation that we made \[x=\frac{ 2y-14 }{ 7}\] and you'll find the value of x as well.

Answer 4

hope i explained well if you have any question let me know i'll be back and if everything is fine then don't forget to give me medal :)