2 years ago

X+y=73x+y=15solve by substitution method

Mathematics

1 answer:

Bess [88]2 years ago

7 0

Step-by-step explanation:

x =7-y

subs x in eqn 2

3(7-y)+y=15

21-3y+y=15

21-2y=15

21-15=2y

6=2y

y=6/2

y=3

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X+y=73x+y=15solve by substitution method​

X+y=73x+y=15solve by substitution method