Answer:
x=−y+7
Step-by-step Explanation:
Let's solve for x.
x+y=7
Step 1: Add -y to both sides.
x+y+−y=7+−y
x=−y+7
Answer:
x=−y+7
the second one
Let's solve for x.
2x−3y=4
Step 1: Add 3y to both sides.
2x−3y+3y=4+3y
2x=3y+4
Step 2: Divide both sides by 2.
2x
2
=
3y+4
2
x=
3
2
y+2
Answer:
x=
3
2
y+2
