Answer:
x= 1
y= -3
Explanation:
multiply them to get common factor for y or x:
3(7y+10x=-11)
10(4y-3x=-15)
21y+30x=-33
40y-30x=-150 x's cancel out so solve for y
61y = -183
/61 /61
y = -3 insert y into either equation and solve for x
4(-3) -3x=-15
x = 1