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511 = -7 (10x – 13)
steps

User Bhilstrom
by
7.1k points

2 Answers

3 votes

Answer:
x=-6

Simplify both sides of the equation


511=(-7)(10x)+(-7)(-13)(Distribute)\\511=-70x+91

Flip the equation


-70x+91=511

Subtract 91 from both sides


-70x+91-91=511-91\\-70x=420

Divide both sides by -70


-70x/70=420/-70\\x=-6

User Deksden
by
7.3k points
5 votes

Answer:


511 = - 7(10x - 13) \\ 511 = - 70x + 91 \\ 511 - 91 = - 70x \\ 420 = - 70x \\ (420)/( - 70) = ( - 70x)/( - 70) \\ \\ x = - 6

hope this helps you...

User Algernon
by
6.7k points