1 answer:
Answer:
x = 40 + -1.5y
Step-by-step explanation:
Simplifying
2x + 3y = 80
Solving
2x + 3y = 80
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-3y' to each side of the equation.
2x + 3y + -3y = 80 + -3y
Combine like terms: 3y + -3y = 0
2x + 0 = 80 + -3y
2x = 80 + -3y
Divide each side by '2'.
x = 40 + -1.5y
Simplifying
x = 40 + -1.5y
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-20%
work:
(24-30):30*100=
(24:30-1)*100=
80-100=-20
Answer:
90
Step-by-step explanation:
5x – 2y + (7x – y)
Combine like terms
12x -3y
Let x = 7 and y = -2
12(7) -3(-2)
84 +6
90
