Answer:
x = [tex]\frac{7}{3}[/tex]
Step-by-step explanation:
Given
3x - 4y = 11 ← substitute y = - 1 into the equation and solve for x
3x - 4(- 1) = 11, that is
3x + 4 = 11 ( subtract 4 from both sides )
3x = 7 ( divide both sides by 3 )
x = [tex]\frac{7}{3}[/tex]
Thus the solution to the equation is ( [tex]\frac{7}{3}[/tex], - 1 )
(7/3, -1) is the answer
Given:
3x - 4y = 11 ← substitute y = - 1 into the equation and solve for x
3x - 4(- 1) = 11, that is
3x + 4 = 11 ( subtract 4 from both sides )
3x = 7 ( divide both sides by 3 )
x = 7/3
The first step in the substitution method is to find the value of any one of the variables from one equation in terms of the other variable. For example, if there are two equations x+y=7 and x-y=8, then from the first equation we can find that x=7-y.
Substitution means putting numbers in place of letters to calculate the value of an expression .
Thus the solution to the equation is (7/3 , - 1 )
Learn more about Substitution here:https://brainly.com/question/22340165
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