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Alex787 [66]
3 years ago
8

Solve for V 6+2(4v-5)=-2(7v-4)+7v

Mathematics
2 answers:
tatiyna3 years ago
6 0
<span>6+2(4v-5)=-2(7v-4)+7v
6+8v-10 = -14v+8 +7v
-4+8v = -7v +8
-4+4+8v = -7v + 8 + 4
8v = -7v + 12
8v+7v =-7v+7v+12
15v =12
15v/15 = 12/15
v = 4/5

check
</span>
<span>6+2(4(4/5)-5)=-2(7(4/5)-4)+7(4/5)
6 +2(3.2-5) = -2(5.6-4)+5.6
6+2(-1.8) = -2(1.6)+5.6
6+-3.6=-3.2+5.6
2.4=2.4
</span>
klasskru [66]3 years ago
5 0
<span>6+2(4v-5)=-2(7v-4)+7v
</span><span>6 + 8v - 10 = -14v + 8 +7v
8v - 4 = -7v + 8
15v = 12
    v = 12/15
    v = 4/5</span>
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1.) k = 5

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10.) b = 5

Step-by-step explanation:

To solve all equations, do the reciprocal, or opposite of what is being done. For example, if a number and a variable are being multiplied, you would divide by the number to solve.

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Divide by 11 on both sides:

55 = 11k

/11     /11

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2.) Add 15 on both sides:

n - 15 = -35

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3.) Divide by -6 on both sides:

78 = -6p

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4.) Multiply by 18 on both sides:

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5.) Add 20 on both sides:

18 = -20 - b

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Divide by -1 on both sides:

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6.) Subtract 12 on both sides:

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Multiply by 4 on both sides:

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b = 5

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