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3 years ago

Solve the equation. -45 = x +(-3) + 50 a2 b-92 c-98 d8

Mathematics

2 answers:

GaryK [48]3 years ago

3 0

B- 92 because you just combined like terms on sides and solve for x.

iren2701 [21]3 years ago

3 0

-45 = x +(-3) + 50
(Combine like terms)
-45 = x + 47
(Subtract 47 from both sides)
-92 = x

Answer: b. -92

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<h3>Given :-</h3>

$\\$

x=y-1
x+2y=8

$\\$

$\\$

Value of x
Value of y

$\\$

<h3>Solution:-</h3>

Let say it is first equation:-

x=y-1. . . . (1)

and this is second equation:-

x+2y=8 . . . . (2)

$\\ \\$

Simplifying 1 equation:-

x = y - 1
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y = x + 1

Put this value of y in second equation.

$\\$

$\dashrightarrow \sf \: x+2y=8$

$\\$

$\dashrightarrow \sf \: x+2(x + 1)=8$

$\\$

$\dashrightarrow \sf \: x+2x +2=8$

$\\ \\$

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$\dashrightarrow \sf \: 3x=6$

$\\ \\$

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$\\$

verification:-

$\\$

1 equation:-

x = y - 1

put value of x and y

2 = 3 - 1

2 = 2

LHS = RHS

Hence verified!

$\\$

2 equation:-

$\\$

x+2y=8

put value of x and y

2 + 2 × 3 = 8
2 + 6 = 8
8 = 8

LHS = RHS

Hence verified!

$\\$

Both equation verified!

.°. value of x and y is 2 and 3 respectively

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