Solve the simultaneous equations 5 x + y = 22 2 x + y = 10
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Answer: x=4, y=2
Step-by-step explanation:
5x+y=22 (eqn 1)
2x+y=10 (eqn 2)
Using substitution method
From eqn 2
2x+y=10
y=10-2x
Put y=10-2x into eqn 1
5x+y=22
5x+(10-2x)=22
5x-2x=22-10
3x=12
x=4
put x=4 into eqn 2
2x+y=10
2(4) +y+10
8+y=10
y=10-8
y=2
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