Question

Solving linear equations

Answer 1

Answer:

(x, y ) = ( $\frac{1}{2}$, $\frac{5}{2}$)

Step-by-step explanation:

given the 2 equations

4x + 2y = 7 → (1)

y = 5x → (2)

Substitute y = 5x into equation (1)

4x + 2(5x) = 7

4x + 10x = 7

14x = 7 ( divide both sides by 14 )

x = $\frac{7}{14}$ = $\frac{1}{2}$

substitute this value into equation (2)

y = 5 × $\frac{1}{2}$ = $\frac{5}{2}$