Question

B-70·3=345 2)a:(400-360)=8

Answer 1

1)

b-70*3=345

b-210=345

b=345-210

b=135

2)

a:(400-360)=8

a:40=8

a=8*40

a=320

Answer 2

To solve the equations, let's first work on each one step by step:

1. B - 70 · 3 = 345

We need to solve for B. To do that, we'll follow the order of operations, which is Parentheses, Exponents, Multiplication and Division (from left to right), and finally Addition and Subtraction (from left to right).

Step 1: Perform the multiplication inside the parentheses:

B - 70 · 3 = 345 B - 210 = 345

Step 2: Now, isolate B by bringing 210 to the other side of the equation by adding it:

B = 345 + 210 B = 555

So, the solution for B is B = 555.

2. a : (400 - 360) = 8

We need to solve for 'a'.

Step 1: Perform the subtraction inside the parentheses:

a : (400 - 360) = 8 a : 40 = 8

Step 2: To solve for 'a', we need to perform division:

a = 8 × 40 a = 320

So, the solution for 'a' is a = 320.