SOLUTION: What answer choice is the best first step in solving this problem using the substitution method? {{{ x - y = -4 }}} {{{ x + 2y = 5 }}} A.) {{{ x = -4 - y }}} B.) {{{ x = -4 +

Algebra ->  Test  -> Lessons -> SOLUTION: What answer choice is the best first step in solving this problem using the substitution method? {{{ x - y = -4 }}} {{{ x + 2y = 5 }}} A.) {{{ x = -4 - y }}} B.) {{{ x = -4 +      Log On


   

Question 1077172: What answer choice is the best first step in solving this problem using the substitution method?
+x+-+y+=+-4+
+x+%2B+2y+=+5+
A.) +x+=+-4+-+y+
B.) +x+=+-4+%2B+y+
C.) +2y+=+5+-+x+
D.) +2y+=+5+%2B+x+
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

+x+-+y+=+-4+....eq.1
+x+%2B+2y+=+5+.......eq.2
-----------------------------using the substitution method
first step in solving:
+x+-+y+=+-4+.......solve for x
+x++=y+-4+.........so, the best answer choice is

B.) +x+=+-4+%2B+y+