genyjoannerubiera
22.06.2019 •
Mathematics
Brainliest maths simultaneous equations topic: luca has some 10 pence pieces and some 5 pence pieces. altogether he has 40 coins and £3.15. how many of each coin does he have?
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Ответ:
y=2x
Step-by-step explanation:
Let's solve for y.
Step 1: Add -2x to both sides.
2x−y+−2x=0+−2x
−y=−2x
Step 2: Divide both sides by -1.
-y/-1 = -2x.-1
y=2x
Therefore, the y=mx+b form of this question would be y=2x