18
That simplifies to 3x - 9y. It can't be solved since it doesn't equal anything.
Multiplication and addition.
No. There is no equality (or inequality) in the question: only a list of expressions.
The first and third are quadratic expressions in x, the second is a quadratic expressions in n, and the fourth is a quadratic expressions in y. None of them are equations so cannot be solved.
(6x - 5y) + (-3x - 4y) =6x - 5y - 3x - 4y =3x - 9y =3 (x - 3y)
18
That simplifies to 3x - 9y. It can't be solved since it doesn't equal anything.
Expand the bracket.
Multiplication and addition.
No. There is no equality (or inequality) in the question: only a list of expressions.
There's not enough information here to answer this accurately. One problem is the lack of operation indication. This could be 3x or 3x or 3 - x or 3 + x. In the future, it is better to write out operations on this website. Presumably, you were given a set of expressions to compare that to but you didn't include them. One possibility: x + x + x = 3x
Two linear expressions with a sum of -5x plus 4 are ( -5x + 4 ) and ( 4 - 5x).
For example: 9x2-25 = (3x-5)(3x+5) but this only applies to negative expressions it wouldn't apply to 9x2+25
It is an expression in two variable: it is NOT an equation. There is no standard form for expressions.
The given expressions can be simplified to: 7y-8x-14
You simply multiply the expression on the outside (in this case, 3) by each of the expressions inside the parentheses, and add everything up. In this case, 3x + 3 times 4.