Question

solve the following pair of linear equation 3 X + 4 Y is equals to 10 and 2 x minus 2 Y is equals to 2solve the following pair of linear equation 3 X + 4 Y is equals to 10 and 2 x minus 2 Y is equals to 2

Answer 1

2x-2y=2                                         Substitute y in equa(2)
2x=2+2y                                          2x-2(1)=2
divide both sides by 2                   2x-2=2
x=1+y                                               2x=2+2
sub x in equa(1)                              2x=4
3(1+y)+4y=10                          Divide both sides by 2
3+3y+4y=10                                  Therefore x=2
3+7y=10
7y=10-3                                             y=1  and x=2
7y=7
    Divide both sides by 7
y=1