79+b=159 b= send help pls... :)
2 answers:
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<span> 0=4+n over 5
In number form the equation is
</span>
<span>We want to isolate n, so to undue division we multiply, we'll multiply each side by 5 Leaving the equation as
</span>
<span>
Next we'll subtract 20 from each side to isolate n
The equation would now be
</span>
<span>
So the answer is N=-20
</span>
In number form the equation is
</span>
<span>We want to isolate n, so to undue division we multiply, we'll multiply each side by 5 Leaving the equation as
</span>
<span>
Next we'll subtract 20 from each side to isolate n
The equation would now be
</span>
<span>
So the answer is N=-20
</span>
Answer:
(8 - 12 )
Step-by-step explanation:
Given
x -
y = 8
x +
y = - 5
Multiply both equations through by 4 to clear the fractions
x - 2y = 32 → (1)
2x + 3y = - 20 → (2)
Multiplying (1) by - 2 and adding to (2) will eliminate the x- term
- 2x + 4y = - 64 → (3)
Add (2) and (3) term by term to eliminate x
0 + 7y = - 84
7y = - 84 ( divide both sides by 7 )
y = - 12
Substitute y = - 12 into either of the 2 equations and solve for x
Substituting into (1)
x - 2(- 12) = 32
x + 24 = 32 ( subtract 24 from both sides )
x = 8
solution is (8, - 12 )
Answer:
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