2x=3y
x=3y-3
2(3y-3)=3y substitution
6y-6=3y distributive property
3y=6 addition property of equality
y=2 multiplication(division) property of equality
x=3(2)-3 substitution
x=6-3
x=3
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It is called solving by elimination.
three things: 1) that the value of 4 is equal to the value of 4. 2) you did not obtain any revealing information. 3) your strategy for solving that system of equations was not good.
u can use gauss jorden or gauss elimination method for solving linear equation u also use simple subtraction method for small linear equation also.. after that also there are many methods are available but above are most used
(2,3)
solve system equation using addition method 3x-y=9 2x+y=6