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ratelena [41]
3 years ago
5

32x+2y=90 19x+4y=90 Find X and y

Mathematics
1 answer:
irina [24]3 years ago
3 0

Answer:

x = 2

y = 13

Step-by-step explanation:

Given that:

32x+2y=90. ......... eq 1

19x+4y=90 ............ eq 2

Now multiply eq 1 with 2

We get:

64x + 4y = 180 ..... eq 3

Subtracting eq 2 from eq 3:

(64x + 4y) - (19x + 4y) = 180-90

Negative sign will inverse signs of next bracket:

64x + 4y - 19x - 4y = 90

Adding like terms:

45x = 90

Dividing both sides by 45:

x = 90/45

x = 2

Now putting value of x in eq 1:

32x + 2y = 90

32(2) + 2y =90

64 + 2y = 90

Subtracting 64 from both sides:

64-64 + 2y = 90 - 64

2y = 26

Dividing both sides by 2

y = 26/2

y = 13

So

x = 2

y = 13

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