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3 years ago

12

write a multiplication equation that has a solution of 8 solve the equation Algebraically as likely to prove that your solution

is correct

1 answer:

GalinKa [24]3 years ago

3 0

2x = 16
x = 8
Simple as that.

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Step-by-step explanation:

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Solve each system of equations.<br><br> 4x + 6y = 8<br> 5x – 4y = 25

Lubov Fominskaja [6]

$\left \{ {{4x+6y=8} \atop {5x-4y=25}} \right. \\ \left \{ {{4x+6y=8} \atop {5x=25+4y}} \right.\\ \left \{ {{4x+6y=8} \atop {x=5+0.8y }} \right. \\ \left \{ {{4(5+0.8y)+6y=8} \atop {x=5+0.8y }} \right. \\ \left \{ {{20+3.2y+6y=8} \atop {x=5+0.8y }} \right. \\ \left \{ {{9.2y=-12} \atop {x=5+0.8y }} \right. \\ \left \{ {{y= -\frac{12}{9.2} } \atop {x=5+0.8y }} \right. \\ \left \{ {{y= -\frac{120}{92} } \atop {x=5+0.8(-\frac{12}{9.2}) }} \right. \\$
$\left \{ {{y= -1\frac{28}{92} } \atop {x=5-\frac{96}{92} }} \right. \\ \left \{ {{y= -1\frac{7}{23} } \atop {x=5-1\frac{1}{23} }} \right. \\ \left \{ {{y= -1\frac{7}{23} } \atop {x=4\frac{1}{23} }} \right. \\$
$\boxed{(x; y)=(4\frac{1}{23}; -1\frac{7}{23}) }$

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3 years ago

Bruno solved the following equation: 4x + one half(10x − 4) = 6 Step Work Justification 1 4x + 5x − 2 = 6 2 9x − 2 = 6 3 9x = 8

beks73 [17]

Answer:

Statement Reason

1. $4x+5x-2=6$ 1. Distributive Property

2. $9x-2=6$ 2. Combine like terms

3. $9x=8$ 3. Addition Property of Equality

4. $x=\dfrac{8}{9}$ 4. Division Property of Equality

Step-by-step explanation:

The given equation is

$4x+\dfrac{1}{2}(10x-4)=6$

Using distributive property, we get

$4x+\dfrac{1}{2}(10x)+\dfrac{1}{2}(-4)=6$

$4x+5x-2=6$

$9x-2=6$ (Combine like terms)

Using Addition Property of Equality, add 2 on both sides.

$9x=6+2$

$9x=8$

Using Division Property of Equality, divide both sides by 9.

$x=\dfrac{8}{9}$

4 0

3 years ago