Question

solve the equation in two variable by the method of substitutions..
3x - y=7
2x + 4y = 0
​

Answer 1

Step-by-step explanation:

by equation one

-y = 7-3x

y=3x-7

put in equation 2

we get

2x+4(3x-7) = 0

2x+12x -28 =0

14x=28

x=2

hopr its help you

can you give ur intro please

had a great day

.

.

@ani

Answer 2

$\huge\bold{\textbf{\textsf{{\color{cyan}{Answer}}}}}$

3x−7=7....(1)

x+4y=11....(2)

Multiply (1) by 4

12x−4y=28....(3)

x+4y=11....(2)

Add (3) and (2)

13x=39

x=3

a−y=7

y=2