Solve 2x+3y=12 and x-b-1=17 simultaneously

The two equations are

2x+3y=12(1)

x-y-1=17(2)

x=17+y+1=18+y

x=18+y(3)

plugging value of x from (3) in (1)

2(18+y)+3y=12

36+2y+3y=12

36+5y=12

5y=-24

y=-24/5=-4.8

plugging this y in equation (3)

x=18+y = 18-4.8 =13.2

Answer : x=13.2 and y=-4.8

1.3

step-by-step explanation:

3x2=6   9x+6

bring down the 6 on both sides

6+6=12

12= 9x

divide by 9

12/9 =

1.3 =x