Add 7 to both sides
3x + 12 = 7x
Subtract 3x
12 = 4x
Divide by 4
x = 3
Answer:
12:1
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Answer:
(-2, 1)
Step-by-step explanation:
consider the following equations: -x-y=1 y=x+3
For the lines to intersect, the values must be the same
-x-y=1
x + y = -1
y = -x - 1
Equating the y values
-x - 1 = x+ 3
-x-x = 3 + 1
-2x = 4
x = 4/-2
x = -2
Substitute x = -2 into y = x+3
y = -2 + 3
y = 1
Hence the required coordinate is (-2, 1)
Domain:
-4 ≤ x ≤ 3
or in different form:
x ∈ [-4; 3]
Answer:
D) x = 12
Step-by-step explanation:
Given:
1. Multiply both sides by 4
2. Subtract 3x from both sides
3. Add 28 to both sides
4. Divide both sides by 7 to isolate the variable:
Learn more here:
brainly.com/question/27844194
