To solve the expression 7b + 14 - 2a when a = 7 and b = -1, follow these steps:

Step 1: Substitute the values of a and b into the expression. This gives us 7(-1) + 14 - 2(7).

Step 2: Simplify the expression by performing the multiplication first (according to the BIDMAS/BODMAS rule). This gives us -7 + 14 - 14.

Step 3: Finally, perform the addition and subtraction from left to right. This gives us -7 + 14 = 7, then 7 - 14 = -7.

So, the value of the expression 7b + 14 - 2a when a = 7 and b = -1 is -7.

Question

To solve the expression 7b + 14 - 2a when a = 7 and b = -1, follow these steps:

Step 1: Substitute the values of a and b into the expression. This gives us 7(-1) + 14 - 2(7).

Step 2: Simplify the expression by performing the multiplication first (according to the BIDMAS/BODMAS rule). This gives us -7 + 14 - 14.

Step 3: Finally, perform the addition and subtraction from left to right. This gives us -7 + 14 = 7, then 7 - 14 = -7.

So, the value of the expression 7b + 14 - 2a when a = 7 and b = -1 is -7.

Knowee AI · Accepted Answer

To solve the expression 7b + 14 - 2a when a = 7 and b = -1, follow these steps:

Step 1: Substitute the values of a and b into the expression. This gives us 7(-1) + 14 - 2(7).

Step 2: Simplify the expression by performing the multiplication first (according to the BIDMAS/BODMAS rule). This gives us -7 + 14 - 14.

Step 3: Finally, perform the addition and subtraction from left to right. This gives us -7 + 14 = 7, then 7 - 14 = -7.

So, the value of the expression 7b + 14 - 2a when a = 7 and b = -1 is -7.

The value of the expression 7b + 14 – 2a (1 mark)When: a = 7 and b = −1 is: