Question

5. Solve using substitution.
x - 2y = 2
3x + 4y - 3​

Answer 1

Step-by-step explanation:

$x - 2y = 2 - - - - - - (i) \\ 3x + 4y - 3 = 0 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ 3x + 4y = 3 - - - - - - {ii}$

Multiplying equation (i) by 3 we get

3x-6y=2

3x+4y=3

(-) (-) (-) {By Subtracting}

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-10y=-1

y=1/10

Putting the value of y in eq (i) we get

x-2(1/10)=2

X-(1/5)=2

x=2+(1/5)

x=(10+1)/5

x=11/5

Answer 2

Answer:

x-2y=2

x=2+2y

now in eqn 2

3(2+2y)+4y-3=0

6+6y+4y=3

6+10y=3

10y= -3

y= -3/10

now,

x-2(-3/10)=2

x+6/10=2

x=2-6/10

x=2-3/5

x=7/5