Question

A) x- 8900 = 8900; 6) 98 427 - y = 8888;B) 945 - (697 - z) = 349;r) 78+ (84 - m) - 13 = 92;A) 69 - (97 – (28 + n)) = 45.​

Answer 1

Пошаговое объяснение:

a) x- 8900 = 8900

x=8900+8900

x=17800

б) 98 427 - y = 8888;

у=98427-8888

у=89 539

B) 945 - (697 - z) = 349

697-z=945-349

697-z=596

z=697-596

z=101

r) 78+ (84 - m) - 13 = 92

65+(84-m)=92

84-m=92-65

84-m=27

m=84-27

m=57

A) 69 - (97 – (28 + n)) = 45

97 – (28 + n)=69-45

28+n=97-24

n=73-28

n=45

Answer 2

To solve each equation, we'll follow the order of operations (PEMDAS/BODMAS) and simplify the expressions step by step. Let's solve them one by one:

A) x - 8900 = 8900

To isolate x, we need to move the constant term (-8900) to the other side of the equation by adding it to both sides:

x - 8900 + 8900 = 8900 + 8900 x = 17800

Therefore, the solution for equation A is x = 17800.

6. 98427 - y = 8888

To isolate y, we'll move the constant term (8888) to the other side of the equation by subtracting it from both sides:

98427 - y - 8888 = 8888 - 8888 89539 - y = 0

Now, to solve for y, we'll move 89539 to the other side of the equation by subtracting it from both sides:

89539 - 89539 - y = 0 - 89539 -y = -89539

Multiplying both sides by -1 to isolate y:

(-1)(-y) = (-1)(-89539) y = 89539

Therefore, the solution for equation 6 is y = 89539.

B) 945 - (697 - z) = 349

To solve this equation, we'll start by simplifying the expression within the parentheses:

945 - 697 + z = 349

Now, we'll combine like terms:

248 + z = 349

Next, we'll isolate z by moving the constant term (248) to the other side of the equation by subtracting it from both sides:

248 + z - 248 = 349 - 248 z = 101

Therefore, the solution for equation B is z = 101.

r) 78 + (84 - m) - 13 = 92

First, we'll simplify the expression within the parentheses:

78 + 84 - m - 13 = 92

Combine like terms:

162 - m - 13 = 92

Combine like terms again:

149 - m = 92

To isolate m, we'll move the constant term (149) to the other side of the equation by subtracting it from both sides:

149 - 149 - m = 92 - 149 -m = -57

Multiplying both sides by -1 to isolate m:

(-1)(-m) = (-1)(-57) m = 57

Therefore, the solution for equation r is m = 57.

A) 69 - (97 - (28 + n)) = 45

First, simplify the expression within the innermost parentheses:

69 - (97 - 28 - n) = 45

Next, simplify the expression within the parentheses:

69 - (69 - n) = 45

Now, distribute the negative sign to the terms inside the parentheses:

69 - 69 + n = 45

Combine like terms:

n = 45

Therefore, the solution for equation A is n = 45.