Rewrite the equation so that y is the ntion of x:
a. 1/7(49-7y)=5x-3y+14
b. 4(2x-3y)=-5(x+3y)
in the first, multiply each term by 7
49 - 7y = 35x - 21y + 98
14y = 35x + 49
y = (5/2)x + 7/2
the second is even easier, just expand, then re-arrange.