70 + 80 + 70 + 30+ 80 + 80+ 80 = 490
131
131
The answer is 560. Simply add the numbers together like you would for two plus two. To check your work, a calculator is the best option.
12x + 131 = 189 + 3x 12x - 3x + 131 - 189 = 0 9x - 58 = 0 9x = 58 x = 6,44444
70 + 80 + 70 + 30+ 80 + 80+ 80 = 490
131
250.
131
131
131
132
131
131
18(7) + 5 = 131
The answer is 560. Simply add the numbers together like you would for two plus two. To check your work, a calculator is the best option.
12x + 131 = 189 + 3x 12x - 3x + 131 - 189 = 0 9x - 58 = 0 9x = 58 x = 6,44444