Question

solve by using elimination method 3x+4y=10 and 2x-2y=2 [class 10]

Answer 1

YOUR ANSWER IS HERE

ELIMINATION METHOD

3x+4y=10------>1

2x-2y=2-------->2


3x+4y=10
2×1=4x-4y=4
______
7x=14
______

7x=14
x=14/7
x=2

sub x=2 in 2

2x-2y=2
2(2)-2y=2
4-2y=2
-2y=2-4
-2y=-2
y=1

sub x and y in 1

3x+4y=10
3(2)+4(1)=10
6+4=10
10=10

VERIFY:--

2x-2y=2
2(2)-2(1)=2
4-2=2
2=2

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Answer 2

Answer:

By using elimination method 3x+4y=10 and 2x-2y=2 we get x=2 y=1.

Step-by-step explanation:

Answer:

Given:

$3 x+4 y=10 \ldots(i)$

$2 x-2 y=2$...(II)

STEP 1: Multiply (ii) by 2

$4 x-4 y=4 \text {...(iii) }$

STEP 2: $Add (i) and (iii)$

$7 x=14 \\ x=\frac{14}{7} =2$

STEP: 3

$Substitute x in (i)\\4-2y=2{2y}=2\\Y=2$

STEP4:

$y=1\\So x=2 and y=1 .$

X=2 Y=1