Answer:
x= -7 and y = 9
Step-by-step explanation:
multiply equation 1 by 1 which is the coefficient of y in the 2nd equa and equation 2 by 9 which is the coefficient of the first equation that will give:
3x + 9 = 60
-27x + 9y = 270
then add the two together that will give:
-27x - 3x +9y -9y = 270- 60
-30x=210
x= -7
substitute x for -7 in equation 1
3(-7)+9y=60
-21+9y= 60
9y=60+21
9y=81
divide both sides by 9
that will give the answer 9
so x= -7 and y = 9
