Question

4 Solve each pair of simultaneous equations.
a x+y=1
b x+y=19
y = 2x - 8
y = 5x + 1​

Answer 1

Let's solve for a.

ax+y=1

Step 1: Add -y to both sides.

ax+y+−y=1+−y

ax=−y+1

Step 2: Divide both sides by x.

ax

x

=

−y+1

x

a=

−y+1

x

Answer:

a=

−y+1

x

Answer 2

Answer:

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