Answer:
6x + 3y
Step-by-step explanation:
3(2x - y) + 6y ← distribute parenthesis by 3
= 6x - 3y + 6y ← collect like terms
= 6x + 3y
So the sum of 4 times a number (4 times x or 4x) and 7 (+7) is (=) 19 (19)
4x+7=19
subtract 7 from both sdies
4x=12
divide by 4
x=3
the number is 3
Answer:
2.99
Step-by-step explanation:
5 minus 2.01 is 2.99
Answer:
-8/9z-7
Step-by-step explanation:
reduce fraction: 5/9z-2/3+2-7/9z-9
calculate difference: -8/9z+2-9 —> -8/9z-7
Answer:
The first step of factorising an expression is to 'take out' any common factors which the terms have. So if you were asked to factorise x² + x, since x goes into both terms, you would write x(x + 1) . This video shows you how to solve a quadratic equation by factoring.
Step-by-step explanation: