Answer:
x=3 y=-1
Explanation:
substitute into one of the equations: 4x+2x-7=11
rearrange unknown terms to the left side of the equation: 4x+2x=11+7
combine like terms: 6x=18
divide both sides by x: x=18/6
calculate to product: x=3
Same thing for y:
y=2x3-7
y=6-7
y=-1
Solution:
x=3
y=-1