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Usimov [2.4K]
3 years ago
8

511 = -7 (10x – 13) steps

Mathematics
2 answers:
densk [106]3 years ago
7 0

Answer:

511 =  - 7(10x - 13) \\ 511 =  - 70x + 91 \\ 511 - 91 = -  70x \\ 420 =  - 70x \\  \frac{420}{ - 70}  =  \frac{ - 70x}{ - 70}  \\  \\ x =  - 6

<em>hope</em><em> </em><em>this</em><em> </em><em>helps</em><em> </em><em>you</em><em>.</em><em>.</em><em>.</em>

PilotLPTM [1.2K]3 years ago
3 0

Answer: x=-6

<u>Simplify both sides of the equation</u>

<u></u>511=(-7)(10x)+(-7)(-13)(Distribute)\\511=-70x+91<u></u>

<u></u>

<u>Flip the equation</u>

<u></u>-70x+91=511<u></u>

<u></u>

<u>Subtract 91 from both sides</u>

<u></u>-70x+91-91=511-91\\-70x=420<u></u>

<u></u>

<u>Divide both sides by -70</u>

<u></u>-70x/70=420/-70\\x=-6<u></u>

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