Question

find the solution by substitution method x - 3y - 10 = 0 and x-7y + 30=0​

Answer 1

Answer:

x=3y+10 ____(1)

x-7y = -30 ____(2)

put eq. 1 into 2

3y+10+-7y=-30

-4y= -40

so,

y = 10

then put y=10 in 1

x=3(10)+10

x=30+10

x=40 answer is this

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