Reciprocate the fraction (numerator becomes denominator and denominator becomes numerator) at the right and change the division (÷) to multiplication (x) sign.
15(4-6) x 49 ÷ 7 = -30 x 49 x
Note: 7 divides itself once and 49, 7 times.
15(4-6) x 49 ÷ 7 = -30 x 7
15(4-6) x 49 ÷ 7 = -210
