Bookwork code: L91 悭 not allowed
Look at the simultaneous equations below.
(1) $x-2 y=15$
(2) $x-3=4 y$
a) Rearrange equation (2) to make $x$ the subject.
b) Using your answer to part a), solve the simultaneous equations using substitution.
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Answer

$\boxed{x = 27, y = 6}$

Steps

Step 1 ：Rearrange equation (2) to make x the subject: $x = 4y + 3$

Step 2 ：Substitute the rearranged equation into equation (1): $(4y + 3) - 2y = 15$

Step 3 ：Solve for y: $2y = 12$ so $y = 6$

Step 4 ：Substitute the value of y back into the rearranged equation to find the value of x: $x = 4(6) + 3$

Step 5 ：$x = 27$

Step 6 ：$\boxed{x = 27, y = 6}$