Question

soluția sistemului 2x-3y=59, 3x+2y=4. x,y=?

Answer 1

3x+2y=4
2y=4-3x
y=(4-3x)/2
2x-3*[(4-3x)]/2=59
(13x-12)/2=59
13x-12=59*2
13x-12=118
13x=118+12
13x=130
x=130/13
x=10
10*2-3y=59
20-3y=59
3y=20-59
3y=-39
y=-39/3
y=-13

Answer 2

sper ca te-am ajutat!