Solve the simultaneous equations 3x+5y=7, 2x-3y=11
Multiply the first equation by 2, and the second by 3:
6x+10y=14
6x-9y=33
Subtract the second from the first:
19y=-19
solve for y:
y=-1
plug in to first equation and solve for x:
6x+10*(-1)=14
6x=24
x=4
JB
Related Maths GCSE answers
All answers ▸y is inversely proportional to d^2 and when d = 10, y = 4. d is directly proportional to x^2 and when x = 2, d = 24. Find a formula for y in terms of x. Give your answer in its simplest form.
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