Experts/ace ( and people that wanna actually )

Y = 5 - 3xso sub in 5 - 3x for y in the other equation

5x - 4y = -3
5x - 4(5 - 3x) = -3
5x - 20 + 12x = -3
5x + 12x = -3 + 20
17x = 17
x = 17/17
x = 1

y = 5 - 3x
y = 5 - 3(1)
y = 5 - 3
y = 2

solution is (1,2) <==

She should use 12/3 to measure