Question

se x=2m+1 e y=m-3,determine o valor de m,x e y na equação 2x+3y=-12

Answer 1

2x + 3y = -12
2(2m+1) + 3(m-3) = -12
4m + 2 + 3m - 9 = -12
7m - 7 = -12
7m = -12 + 7
m = -5/7

2(-5/7) + 1
-10/7 + 7/7
x = -3/7

-5/7 - 3
-5/7 - 21/7
y = -26/7