Tolong dibantu no. 18 ttg persamaan garis lurus

2x + 3y = 2.2 + 3.1
2x + 3y = 4 + 3
2x + 3y = 7

a= 2. b = 3
gradien garis
m= -a/b = -2/ 3 m1 = m2 ( sejajar)
persamaan garis melalui titik ( 2,1)
y - y1 = m2( x - x1)
y - 1= -2/ 3( x - 2)
y - 1 = -2/3x + 4/3
y = -2/3x + 4/3 + 1
y = -2/ 3x + 7/3
3y = -2x + 7
2x + 3y = 7