In the figure m<1=(7x+6),m<2=(5x+12), and m<4=(13x+7). Your friend incorrectly says that m<4=30. What is m<4? What mistake might your friend have made?

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)