Question

(i) 9 - (x - 4) = y + 7
2(x + y) = 4 - 3y​

Answer 1

step-by-step explanation:

(i) 9 - (x - 4) = y + 7

Let's solve for x.

9−(x−4)=y+7

Step 1: Add -13 to both sides.

−x+13+−13=y+7+−13

−x=y−6

Step 2: Divide both sides by -1.

−x/−1=y−6/−1

x=−y+6

Answer:

x=−y+6

2(x + y) = 4 - 3y

Let's solve for x.

2(x+y)=4−3y

Step 1: Add -2y to both sides.

2x+2y+−2y=−3y+4+−2y

2x=−5y+4

Step 2: Divide both sides by 2.

2x/2=−5y+4/2

x=−5/2y+2

Answer:

x=−5/2y+2