Math, asked by sriddick952, 1 year ago

0.4 (x + 3) - 0.7 (x + 3) = -0.3x - 0.9

Answers

Answered by arjun7774

0.4x+ 1.2- 0.7x+2.1 = -0.3x-0.9

-0.3x+3.3 = -0.3-0.9

-0.3x+0.3x = -0.9-3.3

0= -4.2

sriddick952: So do we say there is no solution to this problem?

arjun7774: yes

sriddick952: I have another question. cx + Hy = K, for x

arjun7774: x=k-Hy/c

Answered by upasanatalwar67

Answer:

Step-by-step explanation:

♥️♥️♥️♥️

Given 0.4x + 0.3y = 1.7 -------- (1)

Given 0.7x - 0.2y = 0.8 -------- (2)

On solving (1) * 0.7 & (2) * 0.4, we get

0.28x + 0.21y = 1.19

0.28x - 0.08y = 0.32

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0.29y = 0.87

y = 0.87/0.29

y = 3.

Substitute y = 3 in (1), we get

0.4x + 0.3y = 1.7

0.4x + 0.3(3) = 1.7

0.4x + 0.9 = 1.7

0.4x = 1.7 - 0.9

0.4x = 0.8

x = 0.8/0.4

x = 2.

Therefore the value of x = 2 and y = 3

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Hope it helps ♥️

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