Question

Someone plz solve and check thanks

Answer 1

Remember to follow the order of operation, PEMDAS. PEMDAS stands for:

Parenthesis

Exponents (& Roots)

Multiplication

Division

Addition

Subtraction

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5. 9(7x - 4) = 27

First, distribute 9 to all terms within the parenthesis:

9(7x - 4) = 27

(9 * 7x) - (9 * 4) = 27

63x - 36 = 27

Next, isolate the variable, x. Do the opposite of PEMDAS.

First, add 36 to both sides:

63x - 36 (+36) = 27 (+36)

63x = 27 + 36

63x = 63

Isolate the variable, x. Divide 63 from both sides:

(63x)/63 = (63)/63

x = 63/63 = 1

x = 1

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6. 5(3x + 8) = 175

First, distribute 5 to all terms within the parenthesis:

5(3x + 8) = (5 * 3x) + (5 * 8) = 15x + 40

15x + 40 = 175

Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.

First, subtract 40 from both sides:

15x + 40 (-40) = 175 (-40)

15x = 175 - 40

15x = 135

Next, divide 15 from both sides of the equation:

(15x)/15 = (135)/15

x = 135/15 = 9

x = 9

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