You can put this solution on YOUR website! Solve the system by substitution.
E1: 3x+3y=6
E2: y=–4x–10
:
Substitute -4x-10 in for y in E1 and solve for x.
3x+3(-4x-10)=6
3x-12x-30=6
-9x-30=6
-9x-30+30=30+6
-9x=36
x=-4
Substitute -4 in for x in E2 and solve for y.
y=-4(-4)-10
y=16-10
y=6
The solution (x,y)=(-4,6)
:
Check the solution in both equations.
3(-4)+3(6)=6
-12+18=6
6=6 The solution checks in E1.
:
6=-4(-4)-10
6=16-10
6=6 The solution checks in E2.
We're right!!!
Happy Calculating!!!
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