Add the two equations together, notice that the y and -y cancel. You can solve for x. Take your value of x and put it into either equation. Solve for y. Done.
Also, don't mark this question as calculus. This is algebra.
5x + 8xy + 10x + 3xy = 15x + 11xycombine like terms (the x's and the xy's)
-1
It's a simultaneous equation and can be solved by elimination which works out as:- x = -4 and y = 1
33
5x plus 3 does equal 3 plus 5x; commutative law.
What is the answer to 2x - 5x plus 6.3 equals -14.4?
By a process of elimination and substitution the lines intersect at: (4, -7)
x=6
8x-7 plus 2x equals 6 plus 5x plus 2?
Yes.
How do you add 2x plus 3y equals 18 in 5x-y equals 11
The answer to the math problem of 5x plus 12 equals 93-4 is 77/5.