Answer: 3x+7=a
a+X=63 a=63-x
Substitute into first formula
3x+7=63-x
4x=56
X=
26/2
X=13
A=50
Plug-in answers to check my work
50=3*13+7 46 not equal to 50
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Step-by-step explanation:
I believe an irregular galaxy is what it's called
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Answer:
C
Step-by-step explanation:
(5×2) + (2×3)
(3×2) + (-1×3)
10+6
6-3
16
3