5x-8 + 7x
12x-8
12x = 8
x = 8/12
x= 2/3
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It's just a mathematical polynomial: 7x + 3y.
7x = 5+5x 7x-5x = 5 2x = 5 x = 2.5
The expression 7X + 8 represents a mathematical operation where the variable X is multiplied by 7 and then 8 is added to the result. The expression cannot be simplified further without knowing the specific value of X. If X is a known value, you can substitute it into the expression to find the numerical result.
3x - 2y + 7x + 4y = 3x + 7x - 2y +4y = (3+7)x + (-2+4)y = 10x + 2y
Answer : 12