Answer:
x = 2, y = 1
Step-by-step explanation:
3x + 4y = 10
y = x - 1
The value of y is given, so plug in (x - 1) for y in the first equation:
3x + 4(x - 1) = 10
Expand:
3x + 4x - 4 = 10
Simplify:
7x - 4 = 10
Add 4 to both sides:
7x = 14
Divide both sides by 7:
x = 2
Plug in 2 for x in the second equation:
y = 2 - 1
y = 1
