Aschool needs 25 butterfly breeding kits, and places an order with an educational company. they already have 7 kits, and they receive a box with x kits, but still need 3 more kits. write the equation that you can use to find out how many kits are in the box.

You can write an equation like this:

7 + x = 25 - 3

The amount they have (7) plus the amount they received (x) is 3 less than the amount they need (25). It simplifies to:

7 + x = 22

To solve, isolate the variable by subtracting 7 from each side:

x = 15

The box contained 15 kits.

step-by-step explanation:

always plug in x. in this case, x equals 4.

i'm going to first solve 4(2+3x)

1) 4(2+3(4)) use pemdas to solve.

i'm going to multiply whats in the parenthesis first, so 3 times 4=12.

2)4 (2+12) i'm then going to multiply 4 by both numbers in the parenthesis (because multiplying comes before adding)

4 times 2= 8.   4 times 12= 48

4) (8+48)= 56 (answer)

i'm then going to solve 8+12x and plug in 4 for x.

1) 8 +12(4)

multiplying comes before adding, so i'm gonna multiply 12 and 4.

12 times 4= 48.

2) 8+48=56

both equal the same!

b

step-by-step explanation: