Question

Solve 3x-y+10=0 and 7x-y-30=0 by elimination method. ​

Answer 1

Answer:

3x - Y + 10

7x - y - 30

3x - y = -10 1st equation

7x - y = 30 2nd equation

3x - y = -10

-7x + y = -30

-4x = -40

X = -40 / -4

X = 10

put the value of X in 1st equation

=

3x - y = -10

3 (10 ) - y = -10

30 - y = -10

-y = -10 - 30

-y = -40

y = 40

X = 10

Y = 40

Step-by-step explanation:

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