Solve: 5(x 9) – 23 = 42
a. 4
b. 5
c. –4
d. 16

Question

18-03-2017
Mathematics

contestada

Solve: 5(x 9) – 23 = 42
a. 4
b. 5
c. –4
d. 16

Respuesta :

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irspow irspow · Answer 1 · 2017-03-18T17:50:13+01:00

You missed an operand in the set of parentheses...if it was (x-9) we have:

5(x-9)-23=42 do multiplication indicated on left side...

5x-45-23=42 sum up like terms on left...

5x-68=42 add 68 to both sides

5x=110 divide both sides by 5

x=22 since this answer isn't in your choices the parentheses must have contained (x+9)...uggh :)

5(x+9)-23=42 perform indicated multiplication on left side...

5x+45-23=42 combine like terms on left side...

5x+22=42 subtract 22 from both sides

5x=20 divide both sides by 5

x=4

Solve: 5(x 9) – 23 = 42 a. 4 b. 5 c. –4 d. 16

Respuesta :

Otras preguntas

Solve: 5(x 9) – 23 = 42
a. 4
b. 5
c. –4
d. 16