The = sign
You can:* Add the same expression to both sides of an equation * Subtract the same expression from both sides * Multiply the same expression (must not be zero) to both sides * Divide both sides by the same expression (must not be zero)
The two sides of an equation are referred to as the "left-hand side" (LHS) and the "right-hand side" (RHS). The correct symbol that separates them is the equals sign (=), indicating that both sides represent the same value or expression.
5a = 22 Divide both sides by 5: a = 4.4
12a = 48 Divide both sides by 12 to find the value of a: a = 4
5x - 3 = 12 Add 3 to both sides: 5x = 15 Divide both sides by 5: x = 3
To find the value of y in the expression 15y-4 = 41, you need to isolate y. Start by adding 4 to both sides of the equation to get 15y = 45. Then, divide both sides by 15 to solve for y, which equals 3. Therefore, the value of y in the expression 15y-4 when it equals 41 is 3.
you test it by giving the letters a value say if X equals 5 and Y equals 7 then you calculate both expressions with that value. If both answers are the same, then the simplified expression is correct, or an equivalent.
You can:* Add the same expression to both sides of an equation * Subtract the same expression from both sides * Multiply the same expression (must not be zero) to both sides * Divide both sides by the same expression (must not be zero)
The two sides of an equation are referred to as the "left-hand side" (LHS) and the "right-hand side" (RHS). The correct symbol that separates them is the equals sign (=), indicating that both sides represent the same value or expression.
3a=1divide both sides by 3a=1/3
5a = 22 Divide both sides by 5: a = 4.4
26 - x = xAdd 'x' to both sides.26 = 2xDivide both sides by 2.13 = x
12a = 48 Divide both sides by 12 to find the value of a: a = 4
8x + 5 = 25(- 5 from both sides)8x = 20(divide both sides by 8)x = 2.5
5x - 3 = 12 Add 3 to both sides: 5x = 15 Divide both sides by 5: x = 3
4a-13 = 19 Add 13 to both sides: 4a = 32 Divide both sides by 4 to find the value of a: a = 8
The statement "equals" means that they are equal. If the word "equals" and its symbol " = " are a true statement, then the two sides are truly equal in every way.