Solve the equation. -3x + 7 = -21​

Step-by-step explanation:

-3x + 7 = -21

3x=28

x=28/3

hope it helps

Move all terms that don't contain x to the right side and solve.

Exact Form: x=283

Decimal Form:

x=9.3

Mixed Number Form: x=913

Step-by-step explanation:

part 1 answer = 8

part 2 answer = 72

step-by-step explanation:

part 1 explanation = add all of the numbers, then divide by how many numbers you have. so, 200/25 = 8.

part 2 explanation = not gonna lie, this is hard to explain, so just google how to do it.

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this