2007-07-22 13:42:11 · 11 answers · asked by ELi 1 in Science & Mathematics ➔ Mathematics
5x(3+4.2)+7 and I'm guessing you are just simplifying the equation
1. distribute 5x into parenthesis
15x+21x+7
2. combine like terms
36x+7 --> --> --> YOUR ANSWER!
2007-07-22 13:48:10 · answer #1 · answered by bnhawk03 3 · 0⤊ 0⤋
Hey there!
Here's the answer.
5x(3+4.2)+7 --> Write the problem.
5x(7.2)+7 --> Add 3 and 4.2.
36x+7 Multiply 5x and 7.2
So the answer is 36x+7.
Hope it helps!
2007-07-22 13:48:47 · answer #2 · answered by ? 6 · 0⤊ 0⤋
I'll assume that we are solving for 'x' and the above equation is set equal to zero? If so then your answer is...
5x(3+4.2) +7 = 0
36x +7 = 0
36x = -7
x = -7/36
How anyone got 43 I don't know. You can't combine unlike terms.
2007-07-22 14:05:27 · answer #3 · answered by kif_ewing 2 · 0⤊ 0⤋
5x(3+4.2)+7 =
15x +21x + 7 =
36x + 7
2007-07-22 13:51:06 · answer #4 · answered by Anonymous · 0⤊ 0⤋
43
2007-07-22 13:49:36 · answer #5 · answered by Anonymous · 0⤊ 0⤋
43
2007-07-22 13:47:28 · answer #6 · answered by Anonymous · 0⤊ 0⤋
(5 x 7.2) + 7 = 36 + 7 = 43
2007-07-25 07:11:32 · answer #7 · answered by Como 7 · 0⤊ 0⤋
5 x (3+4.2) + 7
5 x (7.2) + 7
36 + 7
43
Brackets first, then multiplication, then division, then addition, then subtraction
Bless My Dear Aunt Sally- BMDAS
2007-07-22 13:49:40 · answer #8 · answered by Grampedo 7 · 0⤊ 0⤋
5x(3 + 4.2) + 7
5x(7.2) + 7
36x + 7
2007-07-22 13:47:12 · answer #9 · answered by Gorme 3 · 0⤊ 0⤋
36x+7
2007-07-22 13:46:35 · answer #10 · answered by Joe stevens 2 · 0⤊ 0⤋