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arsen [322]
3 years ago
5

Two equations are given below: a – 3b = 9 a = b – 3 What is the solution to the set of equations in the form (a, b)?

Mathematics
2 answers:
ipn [44]3 years ago
8 0
Use substitution and put b-3 where a is in the first equation
Vilka [71]3 years ago
7 0
A-3b=9
a=b-3

b-3-3b=9
-2b-3=9
-2b=12
2b=-12
b=-6

a=-6-3
a=-9

Solution: (-9,-6)
----
Check: 
-9=-6-3
-9=-9
TRUE


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pishuonlain [190]

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Step-by-step explanation:

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9. A television regularly costs $180, but it is on sale for 40% off. There is a
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Step-by-step explanation:

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3 0
3 years ago
A carpenter has s wooden dowel that is 72cm long. She wants to cut into two pieces so that one piece is 5 times as long as the o
Serggg [28]
It's 12 and 60
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7 0
3 years ago
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Lesechka [4]

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8 0
3 years ago
-26 times a number minus 22 is equal to 90 less than the number.
Novay_Z [31]

-26n -22= n - 90

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minus 22: -22

equal: =

90 less than a number: n - 90

Solving the Equation:

Move n to the left side of the equal sign (which becomes -n) in order to combine like terms:

-26n-n-22= -90

Move -22 to the right side of the equal sign which becomes +22

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solve both sides; -26n-n= -27n and -90+ 22= -78

-27n=-78

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5 0
3 years ago
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