Answer:
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Step-by-step explanation:
Answer:
x = 52
General Formulas and Concepts:
Order of Operations: BPEMDAS
Step-by-step explanation:
<u>Step 1: Define equation</u>
3x - 17 = 2x + 35
<u>Step 2: Solve for </u><em><u>x</u></em>
- Subtract 2x on both sides: x - 17 = 35
- Add 17 to both sides: x = 52
<u>Step 3: Check</u>
<em>Plug in x to verify it's a solution.</em>
- Substitute: 3(52) - 17 = 2(52) + 35
- Multiply: 156 - 17 = 104 + 35
- Subtract/Add: 139 = 139
Answer: x = -8 ; y = -6
Step-by-step explanation:
1*x-2*y=4
1*x = 4 + 2*y
x = 4 + 2*y
Now you replace the value of x on the following equation:
-1*x+10*y=8
-1*(4 + 2*y) = 8
-4 - 2*y = 8
-2*y = 8+4
-2*y = 12
y = -12/2
y = -6
You replace the value of y in the previous equation:
x = 4 + 2*y
x = 4 + 2*(-6)
x = 4 - 12
x = -8
21 + 18 = 39
147/39 = 3.7692307692307
3.7692307692307 x 18 = 67.846153846152, round to 67.80 and that's your answer