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4.5(8-x) + 36=102-2.5(3x+24) what’s x?
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4.5(8-x) + 36=102-2.5(3x+24) what’s x?
asked
Jun 21, 2018
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4.5(8-x) + 36=102-2.5(3x+24)
what’s x?
Mathematics
high-school
Anjel
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Anjel
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2
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6
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First, group your like terms:
30-4.5x+36=102-7.5x-60
30+36-4.5x=102-60-7.5x
66-4.5x=42-7.5x
Second, add 7.5x on both sides:
66+3x=42
Next, subract 66 on both sides:
3x=-24
Now, divide 3 on both sides:
-24/3=-8
x=-8
Ilya Sidorovich
answered
Jun 23, 2018
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Ilya Sidorovich
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2
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Let's solve your equation step-by-step.
4.5
(8−x)
+36
=
102−
2.5
(
3x+24
)
Step 1: Simplify both sides of the equation.
4.5
(8−x)
+36
=
102−
2.5
(
3x+24
)
Simplify: (Show steps)
−4.5x
+72
=
−7.5x
+42
Step 2: Add 7.5x to both sides.
−4.5x
+72
+7.5x
=
−7.5x
+42
+7.5x
3x+72
=42
Step 3: Subtract 72 from both sides.
3x+72
−72
=42−72
3x=−30
Step 4: Divide both sides by 3.
3x3
=
−303
x=
−
10
Abulafia
answered
Jun 27, 2018
by
Abulafia
8.4k
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