Question

Solve the simultaneous equations
y = 4x
7x - y = -13.5
Show clear algebraic working.
whts x and wht is y?​

Answer 1

Answer:

x=4.5 and y=18

Step-by-step explanation:

Given,

y=4x

Now 7x-y=13.5

7x-4x=13.5 (since y=4x)

3x=13.5

x=4.5

y=4×4.5=18

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