Solve: {(x,-,3y,=,7),(x,-,5y,=,13):}

illusiia

illusiia

Answered question

2021-09-13

Solve: {x3y=7x5y=13

Answer & Explanation

unessodopunsep

unessodopunsep

Skilled2021-09-14Added 105 answers

{x3y=7x5y=13
Multiply equation (1) by 5 and equation (2) by 3
{5x15y=353x15y=39
Subtract equation (3) from equation (4)
{2x=4x=2
Substitute x = -2 into the equation (1) and solve for y.
23y=7
3y=7+2
3y=9
y=3
Therefore, the solution is (-2. -3).

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