Linear combination method just means to add the equations so that one variable with cancel. In this case the a values are already set up so that they will cancel.
2a + 3b = 1
-2a + b = 11
4b = 12
b = 3
now put 3 back into either of the original equations and solve for a.
2a + 3(3) = 1
2a + 9 = 1
2a = -8
a = -4
(-4,3)
<em>Answer:</em>
<em>8</em>
<em>Step-by-step explanation:</em>
<em>6:0.75</em>
<em>0.75 divided by 0.75=1</em>
<em>6 divided by 0.75=8</em>
<em>8:1</em>
<em>Best,</em>
<em>SunflowerJada</em>
Answer:
4 units ...................
2(x+1)+3x=37
simplifythe left side:
2x +2 +3x = 37
Combine like terms:
5x +2 = 37
Subtract 2 from both sides:
5x = 35
Divide both sides by 5:
x = 7
Answer:
33 gallons
Step-by-step explanation:
44/20 = 2.2
$2.2 per gallon
2.2x15
